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Periderm Stock Photos and Images
RM2KECT6A–Resin flows from a heart-shaped wound of a tree trunk, bark overgrown with lichen and moss, France, Vosges Mountains
RM2HXCWDN–A fire bug (Pyrrhocoris apterus), commonly called a fire beetle, crawls along a tree trunk
RMMCPKF6–. Fig. 7S. Vergr. 400. Stück eines Querschnit- tes durch einen schnittreifen Stengel von Böh- meria nivea. p Periderm. 6 reife Bastzellen. C, P, s, Camh. ivie in Fig. 7(i. Bastzellen und bringt sie zu einem hohen Grade von Weisse und Reinheit. Dabei verliert die Rohfaser 25 Proc. an Trockengewicht.
RMW9JRNW–Newly exposed white pale bark of mature silver birch tree showing large lenticels for breathing and gaseous exchange, Betula utilis jacquemontii
RMAN1K64–common birch, silver birch, European white birch, white birch (Betula pendula, Betula alba), bark
RMW22NR6–Archive image from page 103 of Danmarks fauna; illustrerede haandbøger over. Danmarks fauna; illustrerede haandbøger over den danske dyreverden.. danmarksfaunaill51dans Year: 1907 100 Periderm, der i Reglen er inkrusteret med Slampartikler, som ofte delvis skjuler de 8 Rækker af middelstore Nemathybomer. 16 Ten- takler (meget sjældent 12?). Mesenteriernes Retraktorer i den øvre Del af Kønsregionen med ca. 13 — 18 Folder. Parietalmusklerne med faa til temmelig talrige Folder; deres Udbredelse paa Krop- væggen middelmaadig til betydelig. Nemathybomernes Nematocyster dels 36 — 86X4,5 — 5, dels
RM2AJ7179–Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . inner bark tangentially, finely striate; odor slight;taste somewhat astringent, unpleasant and slightly nauseous. Inner Structure.—(Fig. 168.) Periderm of several layers ofprimary and frequently even secondary cortex, between which are 384 SCIENTIFIC AND APPLIED PHARMACOGNOSY included large groups of stone cells having very thick and porouswalls; bast fibers in tangentially elongated groups separated byplates
RMPG0D1M–. Fossil plants : for students of botany and geology . Paleobotany. 262 COKDAITEAB [CH. by Williamson^ the secondary wood shows clearly marked irregular concentric lines simulating rings of growth, but there is no evidence of any regularly recurring variation in the diameter of the xylem- elements. From the descriptions of Wilhamson and Osborne it. Fig. 477. A, root of Cordaites. B, centre of the root enlarged; p, periderm; s, space. (Kidston Coll. 1906.) is evident that the roots of Cordaites were profusely branched and, as the latter author has shown, the method of branching points to the fo
RMMCPHME–. Fig. ISl. Vergr. 50. Radialsclinitt. j) Periderm, sp Korkmutterzellen, pa Parenthj mzone, c Kamtiumzone, G Gefäße, 7t Holzzellen. teils an über ihren ganzen Verlauf zerstreuten Stellen. Eine sehr voll- kommene Verbindung zwischen den einzelnen Teilen des Gefäßbündel- systems wird durch die Art hergestellt, wie die Mäntel nach unten enden.
RMW9JT0D–Newly exposed white pale bark of mature silver birch tree showing large lenticels for breathing and gaseous exchange, Betula utilis jacquemontii
RMDF9RY9–Close up detail of bark and smooth trunk of Himalayan Birch tree showing the porous Lenticel contrasting against smooth surface
RMW1RGFE–Archive image from page 60 of The Danish Ingolf-Expedition (1921). The Danish Ingolf-Expedition danishingolfexpe0509ingo Year: 1921 ACT INI ARIA 53 Edwardsia vegae n. sp. Diagnosis: Physa weU-developed, perforated by apertures. Scapus with a rather well-developed periderm, polygonal, with scattered, especially in the lower part large nemathybomes. Nematocysts of the physa 14â19 fi, those of the nemathybomes 84â101 x 3/ those of the tentacles 19â24 x 2 //, those of the actinopharynx 38â43 X 3 Z'- Tentacles 16. Longitudinal pennons of the mesenteries in the reproductive region with about 25â30
RM2AXJFHX–Text-book of structural and physiological botany . e generating tissues are thehealing-tissues^ suberous tissues, or cork-tissues. The formerare of service to the plant by their long-continued and vigor-ous growth and the formation of new cells ; while the latter,dying quickly, lose their cell-sap ; their cell-walls become con-verted into cork, and thus form a mantle or envelope whichprotects the subjacent cells from injurious influences of allkinds. Two kinds of this tissue are distinguished—true corkor suber, and periderm; the two are not, however, sharplyseparated, but pass into one another
RMPG3X98–. Physiological botany; I. Outlines of the histology of phænogamous plants. II. Vegetable physiology. Plant physiology; Plant anatomy. LENTICELS. 151 423. Lenticels are peculiar breaks in the continuity of the periderm of dicotyledons. In some cases they can be detected under minute elevations of the epidermis of the first year, which split open either at the end of that season or during the next, forming a rift running lengthwise of the stem, through this cleft. underlying tissues appear, protruding in an irregular manner, the whole structure constituting a lenticel. According to Stahl,'' the
![. Fig. 7v Vergr. 4i)ii. Stfu-k i-ines Qnerscbnit- tes durch einen schnittreifen Stengel von lii,l.- iiuria iiitta. p Periderm. b reife Bastzellen. C, /', s. Ciimh. wie in Fig. "(i. lin.'^lzeil)'!! Ulli] Itiiii;,'! >m- zu c nutn IioIk n (iiadc (>n ^V(•i!;^l• und llciiiia-il. Daboi v.Tliorl ili.' Hdlifa.srr ir, Pnic. an TnnkfDij.wichl. Stock Photo](https://c8.alamy.com/comp/MCPJMR/fig-7v-vergr-4iii-stfu-k-i-ines-qnerscbnit-tes-durch-einen-schnittreifen-stengel-von-liil-iiuria-iiitta-p-periderm-b-reife-bastzellen-c-s-ciimh-wie-in-fig-quoti-linlzeil!!-ulli-itiiii!-gtm-zu-c-nutn-iioik-n-iiadc-gtn-vi!l-und-llciiiia-il-daboi-vtliorl-ili-hdlifasrr-ir-pnic-an-tnnkfdijwichl-MCPJMR.jpg ". Fig. 7v Vergr. 4i)ii. Stfu-k i-ines Qnerscbnit- tes durch einen schnittreifen Stengel von lii,l.- iiuria iiitta. p Periderm. b reife Bastzellen. C, /', s. Ciimh. wie in Fig. "(i. lin.'^lzeil)'!! Ulli] Itiiii;,'! >m- zu c nutn IioIk n (iiadc (>n ^V(•i!;^l• und llciiiia-il. Daboi v.Tliorl ili.' Hdlifa.srr ir, Pnic. an TnnkfDij.wichl. Stock Photo")
RMMCPJMR–. Fig. 7v Vergr. 4i)ii. Stfu-k i-ines Qnerscbnit- tes durch einen schnittreifen Stengel von lii,l.- iiuria iiitta. p Periderm. b reife Bastzellen. C, /', s. Ciimh. wie in Fig. "(i. lin.'^lzeil)'!! Ulli] Itiiii;,'! >m- zu c nutn IioIk n (iiadc (>n ^V(•i!;^l• und llciiiia-il. Daboi v.Tliorl ili.' Hdlifa.srr ir, Pnic. an TnnkfDij.wichl.
RMA3YBNP–common alder, black alder, European alder (Alnus glutinosa), detail of the bark of an dead tree
RMDF9T8N–Close up detail of bark and smooth trunk of Himalayan Birch tree showing the porous Lenticel contrasting against smooth surface
RMT1HK2X–Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 CL'CLItBlTAKlA. 209 unicellular conidia, at first white, later grey. It is these pycnidia which cause the fine perforations of the periderm of twigs. Yet another form of pycnidia, previously known as Dipludia cytisi (Awd.), (Xo. 4). This, like the last, breaks through the corky layers of the bark. It has a peridiuni composed of loose pseudoparenchyma and, withou
RM2AJ6J2E–Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . marshes from Massachu-setts to Pennsylvania. The commercial supply is obtained fromplants cultivated in Germany, France and Holland. The roots arecollected from plants of the second years growth, and the periderm 428 SCIENTIFIC AND APPLIED PHARMACOGNOSY and rootlets are removed. The drug frequently is seen in commercein small pieces about 5 mm. in diameter having a uniform grayish-white color, otherwise resem
![. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. CUCURBITARIA. 209 unicellular conidia, at first white, later grey. It is these pyenidia which cause the fine perforations of the periderm of twigs. Yet another form of pyenidia, previously known as Diplodia cytisi (Awd.), (N"o. 4). This, like the last, breaks through the corky layers of the bark. It has a peridium composed of loose pseudoparenchyma and, without the intervention of conidio- phores, produces two- Stock Photo](https://c8.alamy.com/comp/PG4BNX/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-cucurbitaria-209-unicellular-conidia-at-first-white-later-grey-it-is-these-pyenidia-which-cause-the-fine-perforations-of-the-periderm-of-twigs-yet-another-form-of-pyenidia-previously-known-as-diplodia-cytisi-awd-nquoto-4-this-like-the-last-breaks-through-the-corky-layers-of-the-bark-it-has-a-peridium-composed-of-loose-pseudoparenchyma-and-without-the-intervention-of-conidio-phores-produces-two-PG4BNX.jpg ". Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. CUCURBITARIA. 209 unicellular conidia, at first white, later grey. It is these pyenidia which cause the fine perforations of the periderm of twigs. Yet another form of pyenidia, previously known as Diplodia cytisi (Awd.), (N"o. 4). This, like the last, breaks through the corky layers of the bark. It has a peridium composed of loose pseudoparenchyma and, without the intervention of conidio- phores, produces two- Stock Photo")
RMPG4BNX–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. CUCURBITARIA. 209 unicellular conidia, at first white, later grey. It is these pyenidia which cause the fine perforations of the periderm of twigs. Yet another form of pyenidia, previously known as Diplodia cytisi (Awd.), (N"o. 4). This, like the last, breaks through the corky layers of the bark. It has a peridium composed of loose pseudoparenchyma and, without the intervention of conidio- phores, produces two-
RMMCK6CR–. Fig. -247.—Pt,-id',-mlum p!ni (coiticolo). o, c. Mycelial stroma developed in the rind; the host-cell.s have become isolated from each other and contain haustoria, h, of the fungus. /-, Basidia composed of much smaller cells than in the needle-inhabiting aecidia. ;<, The peridium. (After R. Hartig.) young plants soon succumb to attack, the struggle with old trees may go on for years. Fresh infection of older stems occurs generally in the higher parts of the tree, where the bark is still thin. Pycnidia (spermogonia) are developed between the rind- parenchyma (periderm) and cork, generally
RMDF9T65–Close up detail of bark and smooth trunk of Himalayan Birch tree showing the porous Lenticel contrasting against smooth surface
RMT03HK1–The dynamics of living matter . dynamicsofliving1906loeb Year: 1906 220 DYNAMICS OF LIVING MATTER camel's-hair brush (Fig. 63), and gradually the whole fuses to a more or less shapeless mass which flows back into the periderm, Fig. 64. It follows from this that in this process certain solid constituents of the polyp, e.g. the cell walls, must be liquefied. I pointed out the analogy of these phenomena with Miescher's observations in the salmon. This un- differentiated material formed from the polyp may afterward flow out again, giving rise to a stem or a polyp; to the former where it comes in
RM2AJ96XM–The natural history of plants, their forms, growth, reproduction, and distribution; . Fig. 128.—Transverse sections of Liane Stems. » Thunhergia laurifolia. 2 Rhynchosia phaseoloides. » Tecoma radicans; x 30. Diagrammatic. The various tissues areindicated in tlie following manner: Soft bast, entirely black; wood, larger and smaller white dots on a black ground;hard bast and other mechanical tissues, obliquely shaded; cork (periderm), short lines; pith, reticulated. stem is hollow, and the cavity is surrounded by an enormous pith. In thevascular bundle ring which surrounds the pith, the wood an
RMPG06TP–. Fossil plants : for students of botany and geology . Paleobotany. 378 BENNETTITALBS [CH. steles similar to those in Gycas occasionally occur (fig. 511). The large pith consists of parenchyma and secretory canals, and internal periderm^ may be present; no medullary bundles have been discovered.. Rg. 512. Gycadeoidea ingens. Transverse section of a, young frond, above the tip of the rachis, embedded in ramenta. The rachis is situated on the upper side of the two ranks of pinnae. The arrow points towards the axis of the stem. (After Wieland; x 4.) The correlation of the numerous fronds^ preserv
![. iiiiiiiaii Fi<i. -iVi. — Pi.,-idi:vnumi. pini (corlicola). <i, n. Mycelial stroma developed in tlic rind; the host-cells have become isolated from each other and contain haustoria, A, of the fungus. /, The iKjridium. (After R. Hartig.) young plants soon succumb to attack, the struggle with old trees may go on for years. Fresh infection of older stems occurs generally in the hiudier ])arts of the tree, where tiie b;irk is still thill. Tycnidia (six-rmogonia) are developed between the riiid- parenchyma (periderm) and cork, generally towanls the margin of diseased spots. The coiiidia eme Stock Photo](https://c8.alamy.com/comp/MCK57T/iiiiiiiaii-filti-ivi-pi-idivnumi-pini-corlicola-lti-n-mycelial-stroma-developed-in-tlic-rind-the-host-cells-have-become-isolated-from-each-other-and-contain-haustoria-a-of-the-fungus-the-ikjridium-after-r-hartig-young-plants-soon-succumb-to-attack-the-struggle-with-old-trees-may-go-on-for-years-fresh-infection-of-older-stems-occurs-generally-in-the-hiudier-arts-of-the-tree-where-tiie-birk-is-still-thill-tycnidia-six-rmogonia-are-developed-between-the-riiid-parenchyma-periderm-and-cork-generally-towanls-the-margin-of-diseased-spots-the-coiiidia-eme-MCK57T.jpg ". iiiiiiiaii Fi<i. -iVi. — Pi.,-idi:vnumi. pini (corlicola). <i, n. Mycelial stroma developed in tlic rind; the host-cells have become isolated from each other and contain haustoria, A, of the fungus. /, The iKjridium. (After R. Hartig.) young plants soon succumb to attack, the struggle with old trees may go on for years. Fresh infection of older stems occurs generally in the hiudier ])arts of the tree, where tiie b;irk is still thill. Tycnidia (six-rmogonia) are developed between the riiid- parenchyma (periderm) and cork, generally towanls the margin of diseased spots. The coiiidia eme Stock Photo")
RMMCK57T–. iiiiiiiaii Fi<i. -iVi. — Pi.,-idi:vnumi. pini (corlicola). <i, n. Mycelial stroma developed in tlic rind; the host-cells have become isolated from each other and contain haustoria, A, of the fungus. /, The iKjridium. (After R. Hartig.) young plants soon succumb to attack, the struggle with old trees may go on for years. Fresh infection of older stems occurs generally in the hiudier ])arts of the tree, where tiie b;irk is still thill. Tycnidia (six-rmogonia) are developed between the riiid- parenchyma (periderm) and cork, generally towanls the margin of diseased spots. The coiiidia eme
RMDF9TFN–algae covered bark of Himalayan Birch tree showing the porous Lenticel contrasting against smooth surface peeling skin
RMT1HK17–Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 208 ASCOMYCETES. will be found changing from yellow to black on account of the periderm and dead stroma becoming darker. On dead branches the large cushions of fructifications will be found to include: (a) perithecia with a warty exterior and pores set in a depression; (b) large pycnidia, standing out from the cushions, with brown smooth coats, and full of compo
![American journal of pharmacy . Fig. 5. Cross-section of rhizome, magnified 500 diameters ; a, epidermis ;b, cork or periderm ; c, hypoderma of collenchyma ; d, cortical parenchyma ;e, endoderniis ; /, sclerenchymatous pericycle ; g, phloem or bast; //, xylemor wood ; i, parenchyma of pith.. ^^ Fig. 6. Cross-section of the root, magnified 500 diameters ; <;, epiblema orej)i«lermis of the root ; b, exo<lermis or hypo<lernia of the root ; <*, corticalparenchyma ; </, endo<lermis ; f, parenchymatous ]HTicvcle ; /. phUcni of thevasal bundles ; g^ xylem of the vasal bundles. 240 Li Stock Photo](https://c8.alamy.com/comp/2AXGWER/american-journal-of-pharmacy-fig-5-cross-section-of-rhizome-magnified-500-diameters-a-epidermis-b-cork-or-periderm-c-hypoderma-of-collenchyma-d-cortical-parenchyma-e-endoderniis-sclerenchymatous-pericycle-g-phloem-or-bast-xylemor-wood-i-parenchyma-of-pith-fig-6-cross-section-of-the-root-magnified-500-diameters-lt-epiblema-orejilermis-of-the-root-b-exoltlermis-or-hypoltlernia-of-the-root-lt-corticalparenchyma-lt-endoltlermis-f-parenchymatous-hticvcle-phucni-of-thevasal-bundles-g-xylem-of-the-vasal-bundles-240-li-2AXGWER.jpg "American journal of pharmacy . Fig. 5. Cross-section of rhizome, magnified 500 diameters ; a, epidermis ;b, cork or periderm ; c, hypoderma of collenchyma ; d, cortical parenchyma ;e, endoderniis ; /, sclerenchymatous pericycle ; g, phloem or bast; //, xylemor wood ; i, parenchyma of pith.. ^^ Fig. 6. Cross-section of the root, magnified 500 diameters ; <;, epiblema orej)i«lermis of the root ; b, exo<lermis or hypo<lernia of the root ; <*, corticalparenchyma ; </, endo<lermis ; f, parenchymatous ]HTicvcle ; /. phUcni of thevasal bundles ; g^ xylem of the vasal bundles. 240 Li Stock Photo")
RM2AXGWER–American journal of pharmacy . Fig. 5. Cross-section of rhizome, magnified 500 diameters ; a, epidermis ;b, cork or periderm ; c, hypoderma of collenchyma ; d, cortical parenchyma ;e, endoderniis ; /, sclerenchymatous pericycle ; g, phloem or bast; //, xylemor wood ; i, parenchyma of pith.. ^^ Fig. 6. Cross-section of the root, magnified 500 diameters ; <;, epiblema orej)i«lermis of the root ; b, exo<lermis or hypo<lernia of the root ; <*, corticalparenchyma ; </, endo<lermis ; f, parenchymatous ]HTicvcle ; /. phUcni of thevasal bundles ; g^ xylem of the vasal bundles. 240 Li
![. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ACTINIARIA 135 17 u long. The periderm is thicker than the covering of the physa and imbued with detritus, especially on the numerous papillae which seem to be .of the same nature as the "Halcampa-papiWae", though they are here supported by strong prominences of the mesogloea. The smooth ectoderm of the capitulum is high and provided with rather numerous nematocysts, 17—18 x 2,5 u in size, sometimes a little curved, hut without. Fig- 155 Tcxtfigs. 155—15S. Andivakia mirabilis. F'g- 155: Longitudinal section of the Stock Photo](https://c8.alamy.com/comp/PFHW51/the-danish-ingolf-expedition-scientific-expeditions-arctic-ocean-actiniaria-135-17-u-long-the-periderm-is-thicker-than-the-covering-of-the-physa-and-imbued-with-detritus-especially-on-the-numerous-papillae-which-seem-to-be-of-the-same-nature-as-the-quothalcampa-papiwaequot-though-they-are-here-supported-by-strong-prominences-of-the-mesogloea-the-smooth-ectoderm-of-the-capitulum-is-high-and-provided-with-rather-numerous-nematocysts-1718-x-25-u-in-size-sometimes-a-little-curved-hut-without-fig-155-tcxtfigs-15515s-andivakia-mirabilis-fg-155-longitudinal-section-of-the-PFHW51.jpg ". The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ACTINIARIA 135 17 u long. The periderm is thicker than the covering of the physa and imbued with detritus, especially on the numerous papillae which seem to be .of the same nature as the "Halcampa-papiWae", though they are here supported by strong prominences of the mesogloea. The smooth ectoderm of the capitulum is high and provided with rather numerous nematocysts, 17—18 x 2,5 u in size, sometimes a little curved, hut without. Fig- 155 Tcxtfigs. 155—15S. Andivakia mirabilis. F'g- 155: Longitudinal section of the Stock Photo")
RMPFHW51–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ACTINIARIA 135 17 u long. The periderm is thicker than the covering of the physa and imbued with detritus, especially on the numerous papillae which seem to be .of the same nature as the "Halcampa-papiWae", though they are here supported by strong prominences of the mesogloea. The smooth ectoderm of the capitulum is high and provided with rather numerous nematocysts, 17—18 x 2,5 u in size, sometimes a little curved, hut without. Fig- 155 Tcxtfigs. 155—15S. Andivakia mirabilis. F'g- 155: Longitudinal section of the
![. ? Fio. 24".—Pcridermium pini {corlieolu). c, n. Mycelial stroma developed in tlic rind; the host-cells have become isolated from each other and contain haustoria, h, of the fungus, h, Basidia composed of much smaller cells than in the needle-inhabiting aecidia. j>, The peridium. (After R. Hartig.) young plants soon succumb to attack, the struggle witli old trees may go on for years. Fresh infection of older stems occurs generally in tb.' biglicr parts of the tree, where the bark is still thin. Pycnidia (spermogonia) are developed between the rind- parenchyma (periderm) and cork, gene Stock Photo](https://c8.alamy.com/comp/MCK622/fio-24quotpcridermium-pini-corlieolu-c-n-mycelial-stroma-developed-in-tlic-rind-the-host-cells-have-become-isolated-from-each-other-and-contain-haustoria-h-of-the-fungus-h-basidia-composed-of-much-smaller-cells-than-in-the-needle-inhabiting-aecidia-jgt-the-peridium-after-r-hartig-young-plants-soon-succumb-to-attack-the-struggle-witli-old-trees-may-go-on-for-years-fresh-infection-of-older-stems-occurs-generally-in-tb-biglicr-parts-of-the-tree-where-the-bark-is-still-thin-pycnidia-spermogonia-are-developed-between-the-rind-parenchyma-periderm-and-cork-gene-MCK622.jpg ". ? Fio. 24".—Pcridermium pini {corlieolu). c, n. Mycelial stroma developed in tlic rind; the host-cells have become isolated from each other and contain haustoria, h, of the fungus, h, Basidia composed of much smaller cells than in the needle-inhabiting aecidia. j>, The peridium. (After R. Hartig.) young plants soon succumb to attack, the struggle witli old trees may go on for years. Fresh infection of older stems occurs generally in tb.' biglicr parts of the tree, where the bark is still thin. Pycnidia (spermogonia) are developed between the rind- parenchyma (periderm) and cork, gene Stock Photo")
RMMCK622–. ? Fio. 24".—Pcridermium pini {corlieolu). c, n. Mycelial stroma developed in tlic rind; the host-cells have become isolated from each other and contain haustoria, h, of the fungus, h, Basidia composed of much smaller cells than in the needle-inhabiting aecidia. j>, The peridium. (After R. Hartig.) young plants soon succumb to attack, the struggle witli old trees may go on for years. Fresh infection of older stems occurs generally in tb.' biglicr parts of the tree, where the bark is still thin. Pycnidia (spermogonia) are developed between the rind- parenchyma (periderm) and cork, gene
RMT03HCX–The dynamics of living matter . dynamicsofliving00loeb Year: 1906 22O DYNAMICS OF LIVING MATTER camel's-hair brush (Fig. 63), and gradually the whole fuses to a more or less shapeless mass which flows back into the periderm, Fig. 64. It follows from this that in this process certain solid constituents of the polyp, e.g. the cell walls, must be liquefied. I pointed out the analogy of these phenomena with Miescher's observations in the salmon. This un- differentiated material formed from the polyp may afterward flow out again, giving rise to a stem or a polyp; to the former where it comes in co
RM2AXH8GE–Nature and development of plants . lingthe cavities on surface of pileus. DEVELOPMENT OF PLANTS 237 appear as egg-like structures on rather coarse strands of the myce-lium which traverse decaying vegetation. These bodies consistof a white skin-like periderm which encloses a stipe and pileus(Fig. 175, A, B). The basidia are formed in honeycomb-likecavities on the outer surface of the pileus. As soon as the sporesare matured the stipe quickly elongates, rupturing the peridermand lifting the pileus into the air (Fig. 175, C). In structureand coloration, the Phallales are among the most attractive
![. Studies in fossil botany . Paleobotany. 382 STUDIES IN FOSSIL BOTANY partly filled up by the intercalation of intermediate strands of secondary wood and bast. The activity of the cambium was, in fact, in all respects normal ; the secondary wood and bast agree in structure with the corresponding tissues in the stem. No distinct formation of periderm has been observed in these roots.. Fig. 142.—Lygiuodcndrou oldhamhtltt. Part of radial section of stem, showing an adventitious root, which is so curved as to be seen partly in longitudinal, partly in transverse section, .v", secondary wood o Stock Photo](https://c8.alamy.com/comp/PG16GY/studies-in-fossil-botany-paleobotany-382-studies-in-fossil-botany-partly-filled-up-by-the-intercalation-of-intermediate-strands-of-secondary-wood-and-bast-the-activity-of-the-cambium-was-in-fact-in-all-respects-normal-the-secondary-wood-and-bast-agree-in-structure-with-the-corresponding-tissues-in-the-stem-no-distinct-formation-of-periderm-has-been-observed-in-these-roots-fig-142lygiuodcndrou-oldhamhtltt-part-of-radial-section-of-stem-showing-an-adventitious-root-which-is-so-curved-as-to-be-seen-partly-in-longitudinal-partly-in-transverse-section-vquot-secondary-wood-o-PG16GY.jpg ". Studies in fossil botany . Paleobotany. 382 STUDIES IN FOSSIL BOTANY partly filled up by the intercalation of intermediate strands of secondary wood and bast. The activity of the cambium was, in fact, in all respects normal ; the secondary wood and bast agree in structure with the corresponding tissues in the stem. No distinct formation of periderm has been observed in these roots.. Fig. 142.—Lygiuodcndrou oldhamhtltt. Part of radial section of stem, showing an adventitious root, which is so curved as to be seen partly in longitudinal, partly in transverse section, .v", secondary wood o Stock Photo")
RMPG16GY–. Studies in fossil botany . Paleobotany. 382 STUDIES IN FOSSIL BOTANY partly filled up by the intercalation of intermediate strands of secondary wood and bast. The activity of the cambium was, in fact, in all respects normal ; the secondary wood and bast agree in structure with the corresponding tissues in the stem. No distinct formation of periderm has been observed in these roots.. Fig. 142.—Lygiuodcndrou oldhamhtltt. Part of radial section of stem, showing an adventitious root, which is so curved as to be seen partly in longitudinal, partly in transverse section, .v", secondary wood o
RMMCPK99–. Fig. IGU. Yei-gr. 300/1. Süssholz. Links: Partie des Längsst-linittes aus der Aussen-, Mittel- und Jen äussersten Theilen der Innenrinde, pd Periderm. K Krystallzelleu im Parencliym der Mittel- und Innenrinde. A''Kammerfaser, i Bastfaserbündel, p Amylura-Parenchym. Rechts: Elemente des Pul- vers, hh Fragmente von Bastfaserbündeln, das eine mit Kammerfaser; sp Gefässfragmente; A'Kalk- oxalat-Einzelkrystall; a kleinkörnige Stärke. sowie durch massenhafte, üJDerall im Gesichtsfelde zwischen den Amylum- kürnern liegende, ziemlich charakteristische Kalkoxalatformen {K) die grösseren (24—36 jj.)
RMT03HK0–The dynamics of living matter . dynamicsofliving1906loeb2 Year: 1906 220 DYNAMICS OF LIVING MATTER camel's-hair brush (Fig. 63), and gradually the whole fuses to a more or less shapeless mass which flows back into the periderm, Fig. 64. It follows from this that in this process certain solid constituents of the polyp, e.g. the cell walls, must be liquefied. I pointed out the analogy of these phenomena with Miescher's observations in the salmon. This un- differentiated material formed from the polyp may afterward flow out again, giving rise to a stem or a polyp; to the former where it comes in
RM2AJF3X3–American journal of physiology . 64 Jacques Loeb.. At this stage the transformed shapeless mass of the polyp beginsto flow back into the stem (i, Fig. 4)- A little later only a fractionof the original protoplasm of the polyp is left in the periderm, the rest having crept back into the^ stem (2, Fig. 4). In polyps 3, 2, and I (Fig. i) we see thefurther stages of this process ofthe polyp material flowing backinto the stem. The transformation of polypsand their creeping into the stemoccurs probably in a similar wayin an Antennularia which is putinto the water horizontally. Themain difference betw
RMPFJMCX–. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARIA 43 cases erroneously. I have only been able to examine a specimen imperfectly, mainly in the region of the scapus. Though my obser'ations need completing, I think that they may aid to characterize the species. The ectoderm of the scapus is very thin in comparison to the mesogloea, the periderm thick, and the small nemathybomes provided with (rather sparse?) nematocysts of a length of about 31—^6 n and a breadth of (2) 2.5 «. The nematocysts were commonly not well preserved. Dan
![. ^igl# "^-^^^Vv^ Fig. 59. Vergr. 300. Querschnitt durch die Innenrinde eines älteren (schenkeldicken) Stammes von Pistacia lentisms. st Steinzellenplatten mit eingelagerten Krystallzellen. m Markstrahlen, zum Theil sklerotisch. Im Sielttheile des Gefässbündels zwei Secreträume i (Mastixgänge) und geschrumpfte Siebröhrenstränge o. (Nach J. M 5 11 e r.) und ist von schülferigen, flachen, etwa millimeterdicken, unregelmässigen Borkenschuppen bedeckt. An das Periderm schliesst sich ein Phelloderm 1) Uebor die Entstehung des Mastixharzes s. Tschirch, Angewandte Pflanzen- anatonoie. I, p. 497. Stock Photo](https://c8.alamy.com/comp/MCPM35/igl-quot-vv-fig-59-vergr-300-querschnitt-durch-die-innenrinde-eines-lteren-schenkeldicken-stammes-von-pistacia-lentisms-st-steinzellenplatten-mit-eingelagerten-krystallzellen-m-markstrahlen-zum-theil-sklerotisch-im-sielttheile-des-gefssbndels-zwei-secretrume-i-mastixgnge-und-geschrumpfte-siebrhrenstrnge-o-nach-j-m-5-11-e-r-und-ist-von-schlferigen-flachen-etwa-millimeterdicken-unregelmssigen-borkenschuppen-bedeckt-an-das-periderm-schliesst-sich-ein-phelloderm-1-uebor-die-entstehung-des-mastixharzes-s-tschirch-angewandte-pflanzen-anatonoie-i-p-497-MCPM35.jpg ". ^igl# "^-^^^Vv^ Fig. 59. Vergr. 300. Querschnitt durch die Innenrinde eines älteren (schenkeldicken) Stammes von Pistacia lentisms. st Steinzellenplatten mit eingelagerten Krystallzellen. m Markstrahlen, zum Theil sklerotisch. Im Sielttheile des Gefässbündels zwei Secreträume i (Mastixgänge) und geschrumpfte Siebröhrenstränge o. (Nach J. M 5 11 e r.) und ist von schülferigen, flachen, etwa millimeterdicken, unregelmässigen Borkenschuppen bedeckt. An das Periderm schliesst sich ein Phelloderm 1) Uebor die Entstehung des Mastixharzes s. Tschirch, Angewandte Pflanzen- anatonoie. I, p. 497. Stock Photo")
RMMCPM35–. ^igl# "^-^^^Vv^ Fig. 59. Vergr. 300. Querschnitt durch die Innenrinde eines älteren (schenkeldicken) Stammes von Pistacia lentisms. st Steinzellenplatten mit eingelagerten Krystallzellen. m Markstrahlen, zum Theil sklerotisch. Im Sielttheile des Gefässbündels zwei Secreträume i (Mastixgänge) und geschrumpfte Siebröhrenstränge o. (Nach J. M 5 11 e r.) und ist von schülferigen, flachen, etwa millimeterdicken, unregelmässigen Borkenschuppen bedeckt. An das Periderm schliesst sich ein Phelloderm 1) Uebor die Entstehung des Mastixharzes s. Tschirch, Angewandte Pflanzen- anatonoie. I, p. 497.
RMT1HK19–Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 208 ASC'OMYCETES. will be found changing from yellow to black on account of the periderm and dead stroma becoming darker. On dead branches the large cushions of fructifications will be found to include: (a) perithecia with a warty exterior and pores set in a depression; (b) large pycnidia, standing out from the cushions, with brown smooth coats, and full of compound multiseptate conidia (Fig. 99, b;
RM2AXJFED–Text-book of structural and physiological botany . of cork formed of thin-walled cells parallelto the circumference of the stem, (x 370.) is firmer, less elastic, and more leathery than true cork.When it is several layers in thickness, thick and thin-walled layers often alternate (Fig. 67), causing frequently apeeling off, as in the birch and cherry; in the beech andsilver fir, on the contrary, the periderm does not peel off. Cark is the true healing-tissue of plants, and as such is of greatimportance. In the fresh surfaces of wounds, the uppermost layers ofcells as a rule dry up, while in the
RMPFHWP1–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 52 HYDROIDA II. stalked and mobile, or small, rudimentary or entirely effaced, being represented merely by holes in the periderm, at times with slightly raised, asymmetrical edges. The margin of the hydrotheca is almost always without teeth. The colonies are monopodial with terminal growth point. The gastral endo- derm of the polyp is divided into a fore stomach and a digestive stomach part, the limit between them appearing as a constriction round the body of the polyp. As thus defined, the family covers the group Eleutherop
RMMCPM6A–. Fig.'22. Yergr. 300. Gummibildung im Kirschholz, g lysigene Gummidrnsen. »• mehr oder weniger mit Gummi erfüllte Gefässe. m Markstrahlen, jf Jahresring, Frühjahrholz, jh Jahres- ring, Herhstholz. (Nach Tschirch.)' ZU Gummi umgewandelt werden, während in der Rinde das normale Gewebe der Gummimetamorphose verfällt. Beim Aufquellen nach Regen durchbrechen die Gummimassen das Periderm, welches an der Gummi- bildung nicht Antheil nimmt. Die Körner dieses Gummi haben halbkugelige oder nierenförmige Gestalt und messen oft mehrere Centimeter im Durchmesser. Die Ober- ) Angewandte Pflanzenanatomie.
RMT3XFF9–Archive image from page 494 of Die Rohstoffe des Pflanzenreichs . Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches dierohstoffedesp03wies Year: 1921 Achtzehnter Abschnitt. Unterirdische Pßanzenteile. 483 Im Halse (Hypokotyl) ist der Gefäßbündelverlauf wie in der Wurzel, nur fehlen die radialen Stränge wegen Mangels von Seitenwurzeln. Auch im Kopfe der Rübe herrscht Gesetzmäßigkeit im Gefäßbündelverlauf Die Blattspurstränge verschmelzen mit dem Gefäßbündelsystem des Wurzelkörpers, bzw. Halses. Die ausgewachsene Rübe) ist von einem Periderm umschlo
RM2AXGWWD–American journal of pharmacy . Fi^, f. Cross-section (/>. ol rhi/ou.c. inaKuititl ii> «lianielcrs; a, outerlayer of bark ; b, middle layer of bark ; <. internit.tfd rinlr <.f scU-riiuhvniafibres ; d, inner layer of bark ; e, wood ; J pith. Fig. 5. Cross-section of rhizome, magnified 500 diameters ; a, epidermis ;b, cork or periderm ; c, hypoderma of collenchyma ; d, cortical parenchyma ;e, endoderniis ; /, sclerenchymatous pericycle ; g, phloem or bast; //, xylemor wood ; i, parenchyma of pith.
![. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARIA 135 17 // long. The periderm is thicker than the covering of the physa and imbued with detritus, especially on the numerous papillae which seem to be of the same nature as the "//a/cam/)a-papillae", though they are here supported by strong prominences of the mesogloea. The smooth ectoderm of the capitulum is high and provided with rather numerous nematocysts, 17—18 x 2,5 ^ in size, sometimes a little curved, but without. Fig. 156 Tcxtfigs. 155—158. Andwakia mirabilis. Stock Photo](https://c8.alamy.com/comp/PFJKYK/the-danish-ingolf-expedition-marine-animals-arctic-regions-scientific-expeditions-arctic-regions-actiniaria-135-17-long-the-periderm-is-thicker-than-the-covering-of-the-physa-and-imbued-with-detritus-especially-on-the-numerous-papillae-which-seem-to-be-of-the-same-nature-as-the-quotacama-papillaequot-though-they-are-here-supported-by-strong-prominences-of-the-mesogloea-the-smooth-ectoderm-of-the-capitulum-is-high-and-provided-with-rather-numerous-nematocysts-1718-x-25-in-size-sometimes-a-little-curved-but-without-fig-156-tcxtfigs-155158-andwakia-mirabilis-PFJKYK.jpg ". The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARIA 135 17 // long. The periderm is thicker than the covering of the physa and imbued with detritus, especially on the numerous papillae which seem to be of the same nature as the "//a/cam/)a-papillae", though they are here supported by strong prominences of the mesogloea. The smooth ectoderm of the capitulum is high and provided with rather numerous nematocysts, 17—18 x 2,5 ^ in size, sometimes a little curved, but without. Fig. 156 Tcxtfigs. 155—158. Andwakia mirabilis. Stock Photo")
RMPFJKYK–. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARIA 135 17 // long. The periderm is thicker than the covering of the physa and imbued with detritus, especially on the numerous papillae which seem to be of the same nature as the "//a/cam/)a-papillae", though they are here supported by strong prominences of the mesogloea. The smooth ectoderm of the capitulum is high and provided with rather numerous nematocysts, 17—18 x 2,5 ^ in size, sometimes a little curved, but without. Fig. 156 Tcxtfigs. 155—158. Andwakia mirabilis.
RMMCPM3Y–. Fig. 58. Vergr. 170. Harzführendes Rindengewebe aus der Mastixpistauie. // Havzgang. B Bastbündel. 0 Cambium. (Nach Unger.) von Parenchym und schliesslich von Periderm bedeckt sind, fn Lücken, welche die dichten, wellenförmig verlaufenden Bastzonen freilassen, liegen die Harzgänge, welche hier nichts anderes sind als weite Intercellular- räume, in denen sich keine Spur von Zellgewebsresten nachweisen lässt. Selbst in ganz jungen Stämmen erkennt man diese Harzgänge als weite, scharf gegen das benachbarte Gewebe abgegrenzte Lücken, in deren Harzsaft von Gewebsresten nichts zu entdecken ist. De
RMT3XFEH–Archive image from page 493 of Die Rohstoffe des Pflanzenreichs . Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches dierohstoffedesp03wies Year: 1921 482 Achtzehnter Abschnitt. Unterirdische Pllanzenteile. oder weniger kegelfürmiger Gestalt, entsprechend der Form des Wurzel- kürpers. Sie sind in jedem Mantel zu einem gleichmäßigen Netz ver- bunden. Die Mäntel selbst anastomosieren teils an ihren oberen Enden. Fig. ISl. Vergr. 50. Radialsclinitt. j) Periderm, sp Korkmutterzellen, pa Parenthj mzone, c Kamtiumzone, G Gefäße, 7t Holzzellen. teils a
RM2AJ6W96–Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . s-section the cambium margin is indistinctly crenate;odor slight, distinct; taste bitter, slightly acrid and disagreeable. Inner Structure.—(Figs. 177 and 178.) Periderm of usually anumber of layers of rectangular thin-walled, yellowish-brown orreddish-brown cork cells, a number of which have a brown amor-phous content; a hypodermis of several layers of collenchymatouscells having a dark-brown color; primary
RMPFHWE6–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ACTINIARIA 43 cases erroneously. I have only been able to examine a specimen imperfectly, mainly in the region of the scapus. Though my observations need completing, I think that they may aid to characterize the species. The ectoderm of the scapus is very tliin in comparison to the mesogloea, the periderm tliick, and the small nemathybomes provided with (rather sparse?) nematocysts of a length of about 31—36/^ and a breadth of (2) 2.5//. The nematocysts were commonly not well preserved. Danielssen has reproduced a section th
RMMCK6RK–. oo OG K- Fig. 109.—Fa/«a oxystoma on Alnus viridls. A, Portion of branch with stroma of Vaha breaking through the periderm at four places. B, Enlarged section through a stroma from A. C, Asci and ascospores, isolated from a perithecium. D, Portion of younger branch with periderm ruptured by stromata, in which, however, the perithecia are not yet developed. E, Enlarged section through a stroma of D. (After v. Tubeuf.) with the exterior by means of long projecting necks. The asci contain eight unicellular spores of a slightly bent, rod- like shape. Maturity is reached on the dry dead twigs. Ex
RMT3XFEK–Archive image from page 493 of Die Rohstoffe des Pflanzenreichs . Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches dierohstoffedesp03wies Year: 1921 Fig. ISl. Vergr. 50. Radialsclinitt. j) Periderm, sp Korkmutterzellen, pa Parenthj mzone, c Kamtiumzone, G Gefäße, 7t Holzzellen. teils an über ihren ganzen Verlauf zerstreuten Stellen. Eine sehr voll- kommene Verbindung zwischen den einzelnen Teilen des Gefäßbündel- systems wird durch die Art hergestellt, wie die Mäntel nach unten enden. Fig. 1S2. Vergr. 250. Parenchym aus den peripheren Schichte
RM2AJ7EH8–Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . Fig. 135.—Prunus serotina Ehrhart: A, longitudinal section of inner bark, show-ing crystals of calcium oxalate (a), medullary ray cells containing starch(b and d), and leptome or sieve (c). B, transverse section of stem barkshowing cork, probably secondary periderm (a) cells of cortex (6) containingchloroplasts, groups of sclerotic cells (c), compressed leptome in the outerportion of the bast layer (d), medul
![. Studies in fossil botany . Paleobotany. ULODENDRON AND HALONIA 171 not always an obvious one. As a rule the appendages of Ulodendron were distichously arranged, while those of Halonia were multiseriate, and quincuncially dis- posed. Williamson, however, described a specimen with. Fig. b§.—Lepido£kloiosfuliginosus. Transverse section of a young shoot (probably in the Halonial condition) ; a, pith, a, xylem, of main stele ; a", xylem of branch ; i>, V phloem of main and branch steles ; c, leaf-traces ; d, inner cortex ; e, middle cortex ; f, periderm; g, leaf-bases; /, ligule. X about Stock Photo](https://c8.alamy.com/comp/PG174W/studies-in-fossil-botany-paleobotany-ulodendron-and-halonia-171-not-always-an-obvious-one-as-a-rule-the-appendages-of-ulodendron-were-distichously-arranged-while-those-of-halonia-were-multiseriate-and-quincuncially-dis-posed-williamson-however-described-a-specimen-with-fig-blepidokloiosfuliginosus-transverse-section-of-a-young-shoot-probably-in-the-halonial-condition-a-pith-a-xylem-of-main-stele-aquot-xylem-of-branch-igt-v-phloem-of-main-and-branch-steles-c-leaf-traces-d-inner-cortex-e-middle-cortex-f-periderm-g-leaf-bases-ligule-x-about-PG174W.jpg ". Studies in fossil botany . Paleobotany. ULODENDRON AND HALONIA 171 not always an obvious one. As a rule the appendages of Ulodendron were distichously arranged, while those of Halonia were multiseriate, and quincuncially dis- posed. Williamson, however, described a specimen with. Fig. b§.—Lepido£kloiosfuliginosus. Transverse section of a young shoot (probably in the Halonial condition) ; a, pith, a, xylem, of main stele ; a", xylem of branch ; i>, V phloem of main and branch steles ; c, leaf-traces ; d, inner cortex ; e, middle cortex ; f, periderm; g, leaf-bases; /, ligule. X about Stock Photo")
RMPG174W–. Studies in fossil botany . Paleobotany. ULODENDRON AND HALONIA 171 not always an obvious one. As a rule the appendages of Ulodendron were distichously arranged, while those of Halonia were multiseriate, and quincuncially dis- posed. Williamson, however, described a specimen with. Fig. b§.—Lepido£kloiosfuliginosus. Transverse section of a young shoot (probably in the Halonial condition) ; a, pith, a, xylem, of main stele ; a", xylem of branch ; i>, V phloem of main and branch steles ; c, leaf-traces ; d, inner cortex ; e, middle cortex ; f, periderm; g, leaf-bases; /, ligule. X about
RMMCK5GM–. o o^*^ ly Fio. Ujy.— Valm oj-i/itomu on Atnus tiiulis. A, I'ortion ol liniiu-li witli stroiiui of Vatsa breaking tbinrngh the periderm at four places. W, Knbirgod section through :i stroma from A. C, And and aHcospores, isoLited from a i>eritliucium. D, I'ortion of younger liranch witli periderm ruptured Jiy stromata, in wliicli, however, the jieritlieeia are not yet developed. £, Enlarged section through a stroma of J). (After v. Tulieuf.) with the exterior liy means of long projecting necks. Tht- asci contain eigiit unicellular spores of u slightly bent, md like shajtc. Maturity is reac
RM2AXH9B2–Nature and development of plants . Fig. 172. Diagram of a section of one of the puffballs, showing thethick skin or periderm and the irregular cavities which are lined withbasidia. At the base the larger, sterile cavities of the stipe are shown. periderm splits into rather regular star-like segments or valveswhich are hygroscopic. In damp weather these valves roll back,in some species to such an extent as to lift the puff ball from the. Fig. 173. One of the puff-balls popularly known as earth stars, show-ing the outer periderm splitting into star-like sections and the inner peri-derm opening b
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