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Spores on leaf Cut Out Stock Images
RF2KF49Y2–Fungal plant disease Powdery Mildew on a tomato leaf. White plaque on the leaf. Infected plant displays white powdery spots on the leaf. Close up.
RFK2XPY2–The underside of a pear leaf showing fungal infection. The raised brown spots are as a result of the gymnosprangium sabinae fungus. On eruption the sp
RF2F5BDXD–Yellow rotten quince on a white background. Spoiled fruit with mold close-up. Blue and white mold on ripe quince.
RFKDG98K–The earliest conifers date to the Carboniferous Period possibly arising from the Cordaites, a genus of seed-bearing Gondwanan plants with cone-like fe
![. [Scientific lectures]. of conida of the OidiumMonilioides; 6, portion of grass leaf with samespecies of blight, the spores being the self-same beads and egg-shaped bodies, whencethe generic name, but careful observationwill show us that this ig not its perfect con-dition; and when later in autumn thesethreads become more compact, and are sur-mounted on their horizontal surfaces byshining black capsules, or perithecia, each ofwhich is filled with elegant eUiptical andelongated cells, and each in turn contain-ing several spores, we shall find in Erisypliethat we have arrived at the conclusion Stock Photo](https://c8.alamy.com/comp/2AG36W7/scientific-lectures-of-conida-of-the-oidiummonilioides-6-portion-of-grass-leaf-with-samespecies-of-blight-the-spores-being-the-self-same-beads-and-egg-shaped-bodies-whencethe-generic-name-but-careful-observationwill-show-us-that-this-ig-not-its-perfect-con-dition-and-when-later-in-autumn-thesethreads-become-more-compact-and-are-sur-mounted-on-their-horizontal-surfaces-byshining-black-capsules-or-perithecia-each-ofwhich-is-filled-with-elegant-euiptical-andelongated-cells-and-each-in-turn-contain-ing-several-spores-we-shall-find-in-erisypliethat-we-have-arrived-at-the-conclusion-2AG36W7.jpg ". [Scientific lectures]. of conida of the OidiumMonilioides; 6, portion of grass leaf with samespecies of blight, the spores being the self-same beads and egg-shaped bodies, whencethe generic name, but careful observationwill show us that this ig not its perfect con-dition; and when later in autumn thesethreads become more compact, and are sur-mounted on their horizontal surfaces byshining black capsules, or perithecia, each ofwhich is filled with elegant eUiptical andelongated cells, and each in turn contain-ing several spores, we shall find in Erisypliethat we have arrived at the conclusion Stock Photo")
RM2AG36W7–. [Scientific lectures]. of conida of the OidiumMonilioides; 6, portion of grass leaf with samespecies of blight, the spores being the self-same beads and egg-shaped bodies, whencethe generic name, but careful observationwill show us that this ig not its perfect con-dition; and when later in autumn thesethreads become more compact, and are sur-mounted on their horizontal surfaces byshining black capsules, or perithecia, each ofwhich is filled with elegant eUiptical andelongated cells, and each in turn contain-ing several spores, we shall find in Erisypliethat we have arrived at the conclusion
RF2EEFXCY–Boletus edulis mushrooms with green grass and dry leaf isolated on white background. Vector illustration.
RMPG41FA–. Essentials of botany. Botany; Botany. THE FUNGI 267 Examine first with m.p., and then with h.p. Note: (a) The forms of the cluster-cups at various stages of growth. Compare with the cup on an anemone leaf, shown in Fig. 181. (6) The structure of the cup, surrounded by a layer of mycelium, next to which comes theperidium, or wall of the cup. The latter is filled with chains of spores (cecidiospores). Draw the cup with its contents. (c) The size and shape of the mature f spores which separate from the ends of the chains. (d) The cavities, smaller than the cluster cups and on the opposite surfa
RF2DE69CP–Ecological Concept, Illustration of Beautiful Pteridophyta or Tassle Fern Leaves Isolated on White Background.
RFKDG98E–The earliest conifers date to the Carboniferous Period possibly arising from the Cordaites, a genus of seed-bearing Gondwanan plants with cone-like fe
RMRDX0Y9–. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. 186 HEMIBASIDIOMYCETES [CH. fields. As a rule the conidia are of the same oblong form as the basidio- spores, but, in the genus Tilletia and some of its allies, they may be stout or sickle-shaped, whereas the basidiospores are long and narrow. In Entyloma the brand-spores are capable of germination on the tissues of the host leaf, where they give rise to hyphae which penetrate through the stomata and form basidia from which basidiospores are produced. During their development the cells of the basidium, the basidiospores, or the conidia bu
RMPG25PM–. Beginners' botany. Botany. Fig. 256. — Common Polypode Fern. Polypodium vulgare. Fig. 257. —Sori and Spo- rangium OF Polypode. A chain of cells lies along the top of the sporangium, which springs back elasti- cally on drying, thus dis- seminating the spores. Fig. 258. —The Brake Fruits underneath THE Revolute Edges of the Leaf. The sporangia are collected into little groups, known as sori (singular, sorus) or fruit-dots. Each sorus is covered with a thin scale or shield, known as an indusium. This indusium sepa- rates from the frond at its edges, and the sporangia are exposed. Not all ferns
RFKDGBPT–Tall Carboniferous Pine - The earliest conifers date to the Carboniferous Period possibly arising from the Cordaites, a genus of seed-bearing Gondwana.
RMRE1N20–. Elementary botany. Botany. 342 ECOLOG V. divisions of the pinnje, are inrolled into little spherical masses which lie close on the side of the pinnae. If we unroll one of these pinnules we find that there are several fruit dots within protected by this roll. In fact when the spores are mature these. Fig. 446. Sensitive fern ; one fertile leaf nearly changed to vegetative leaf. pinnules open somewhat, so that the spores may be dissemi- nated. There is very little green color in these fertile leaes, and what green surface there is is very small compared ^•ith that of the broad expanse of the
RMPG20WR–. A textbook of botany for colleges and universities ... Botany. Fig. 931. —A leaf of Ficus religiosa^ a tree of the tropical rain forest, showing a so- called dripping point (d). —After Stahl. Fig. 932. — A portion of a leaf of a tropical Asplenium^ illustrating reproduction by leaves; on the under sides of the ultimate leaf divisions (pinnules) are fruit dots or sori (i), in which are sporangia with their spores; on the upper sides of the pinnules are bulbils (6), which here have germi- nated while connected with the parent plant, giving rise to bulblings whose leaves (/) already are conspic
RFKDGBP6–The earliest conifers date to the Carboniferous Period possibly arising from the Cordaites, a genus of seed-bearing Gondwana plants with cones.
RMRDG51N–. Essentials of botany. Botany; Botany. THE FUNGI 267 Examine first with m.p., and then with h.p. Note: (a) The forms of the cluster-cups at various stages of growth. Compare with the cup on an anemone leaf, shown in Fig. 181. (6) The structure of the cup, surrounded by a layer of mycelium, next to which comes theperidium, or wall of the cup. The latter is filled with chains of spores (cecidiospores). Draw the cup with its contents. (c) The size and shape of the mature f spores which separate from the ends of the chains. (d) The cavities, smaller than the cluster cups and on the opposite surfa
RMPG4G79–. The fungi which cause plant disease . Plant diseases; Fungi. FiQ. 159.—^A single perithecium of A. vaccinii taken from a pure culture on corn meal. After Shear. Fig. 160.—Acan- thorhynchus; a germinating as- cospore bearing the peculiar appressorium, 17, view from above. After Shear. old fallen leaves. In culture, however, it produces abundant peri- thecia. When on the leaf the perithecia are subepidermal and are sparsely scattered over the lower surface. No conidial or pycnidial form is known. Remarkable appressoria are produced by the germ tubes from the spores, Fig. 160. Sphseriacese (p.
![. Plant studies; an elementary botany. Botany. 272 PLANT STUDIES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sporophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mild Stock Photo](https://c8.alamy.com/comp/RE1JK2/plant-studies-an-elementary-botany-botany-272-plant-studies-finally-deadened-spots-on-the-leaves-where-the-tissues-have-been-killed-from-this-internal-mycelium-numerous-sporophores-arise-coming-to-the-surface-of-the-host-and-securing-the-scattering-of-their-spores-which-fall-upon-other-leaves-and-germinate-the-new-mycelia-pene-trating-among-the-tissues-and-begin-ning-their-ravages-the-sporophores-af-ter-rising-above-the-surface-of-the-leaf-branch-freely-and-many-of-them-rising-near-together-they-form-little-velvety-patches-on-the-surface-suggesting-the-name-quot-downy-mild-RE1JK2.jpg ". Plant studies; an elementary botany. Botany. 272 PLANT STUDIES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sporophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mild Stock Photo")
RMRE1JK2–. Plant studies; an elementary botany. Botany. 272 PLANT STUDIES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sporophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mild
![. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 623 tapering, obtuse, basally dark-brown, slightly constricted at the septa, 5 to 9 times cross-septate and 0-5 times longitudinally septate. It causes injury on carnation leaves and stems. A. solani (E. & M.) Jones & Grout. '"• ^''''"'-'" Spots brown, circular to elliptic, concentrically zonate, amphige- nous, irregularly scattered over the leaf surface; mycelium. Fio. 422.—A. solani, 2, spores germinating and penetrating the living potato leaf; 5, showing cateuulatiou of Stock Photo](https://c8.alamy.com/comp/PG45GC/the-fungi-which-cause-plant-disease-plant-diseases-fungi-the-fungi-which-cause-plant-disease-623-tapering-obtuse-basally-dark-brown-slightly-constricted-at-the-septa-5-to-9-times-cross-septate-and-0-5-times-longitudinally-septate-it-causes-injury-on-carnation-leaves-and-stems-a-solani-e-amp-m-jones-amp-grout-quot-quot-quot-spots-brown-circular-to-elliptic-concentrically-zonate-amphige-nous-irregularly-scattered-over-the-leaf-surface-mycelium-fio-422a-solani-2-spores-germinating-and-penetrating-the-living-potato-leaf-5-showing-cateuulatiou-of-PG45GC.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 623 tapering, obtuse, basally dark-brown, slightly constricted at the septa, 5 to 9 times cross-septate and 0-5 times longitudinally septate. It causes injury on carnation leaves and stems. A. solani (E. & M.) Jones & Grout. '"• ^''''"'-'" Spots brown, circular to elliptic, concentrically zonate, amphige- nous, irregularly scattered over the leaf surface; mycelium. Fio. 422.—A. solani, 2, spores germinating and penetrating the living potato leaf; 5, showing cateuulatiou of Stock Photo")
RMPG45GC–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 623 tapering, obtuse, basally dark-brown, slightly constricted at the septa, 5 to 9 times cross-septate and 0-5 times longitudinally septate. It causes injury on carnation leaves and stems. A. solani (E. & M.) Jones & Grout. '"• ^''''"'-'" Spots brown, circular to elliptic, concentrically zonate, amphige- nous, irregularly scattered over the leaf surface; mycelium. Fio. 422.—A. solani, 2, spores germinating and penetrating the living potato leaf; 5, showing cateuulatiou of
![. Plants; a text-book of botany. Botany. 56 PLANT STKUCTDEES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sjiorophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely ; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mildew Stock Photo](https://c8.alamy.com/comp/RDWB15/plants-a-text-book-of-botany-botany-56-plant-stkuctdees-finally-deadened-spots-on-the-leaves-where-the-tissues-have-been-killed-from-this-internal-mycelium-numerous-sjiorophores-arise-coming-to-the-surface-of-the-host-and-securing-the-scattering-of-their-spores-which-fall-upon-other-leaves-and-germinate-the-new-mycelia-pene-trating-among-the-tissues-and-begin-ning-their-ravages-the-sporophores-af-ter-rising-above-the-surface-of-the-leaf-branch-freely-and-many-of-them-rising-near-together-they-form-little-velvety-patches-on-the-surface-suggesting-the-name-quot-downy-mildew-RDWB15.jpg ". Plants; a text-book of botany. Botany. 56 PLANT STKUCTDEES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sjiorophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely ; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mildew Stock Photo")
RMRDWB15–. Plants; a text-book of botany. Botany. 56 PLANT STKUCTDEES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sjiorophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely ; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mildew
RMPG3J02–. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. MOSSES WITH A HAND-LENS 173. Figure 100. Scapania nemorosa. Branch X 2. Leaf X 10. tinctly longer than broad and are strongly ciliate-dentate. The leaves are stiff and only a little larger above. The perianth mouth is ciliate-dentate. The spores mature in spring. S. UNDULATA (L.) Dum., the Aquatic Scapania, is less common than the pre- ceding and grows on stones in streams or in very wet places. It is green, or frequently red or dark brownish-red.
![. Experimental morphology. Protoplasm; Growth. §2] UPON THE DIRECTION OF GROWTH 341 by a fine needle point. The solutions were injected into the leaf of Tradescantia, spores were sown upon its stoma-bearing surface, and the whole was kept in a moist chamber. If the solution was attractive, the growing hyphse penetrated into the stomata, whereas in the absence of the solution they showed no tendency to do so. Similarly, spores sown on the perforated plate sent hyphse downwards through the holes when the plate was floating on attractive solutions, but not otherwise. Mole-. FiG. 94. — Upper figur Stock Photo](https://c8.alamy.com/comp/RE0GA1/experimental-morphology-protoplasm-growth-2-upon-the-direction-of-growth-341-by-a-fine-needle-point-the-solutions-were-injected-into-the-leaf-of-tradescantia-spores-were-sown-upon-its-stoma-bearing-surface-and-the-whole-was-kept-in-a-moist-chamber-if-the-solution-was-attractive-the-growing-hyphse-penetrated-into-the-stomata-whereas-in-the-absence-of-the-solution-they-showed-no-tendency-to-do-so-similarly-spores-sown-on-the-perforated-plate-sent-hyphse-downwards-through-the-holes-when-the-plate-was-floating-on-attractive-solutions-but-not-otherwise-mole-fig-94-upper-figur-RE0GA1.jpg ". Experimental morphology. Protoplasm; Growth. §2] UPON THE DIRECTION OF GROWTH 341 by a fine needle point. The solutions were injected into the leaf of Tradescantia, spores were sown upon its stoma-bearing surface, and the whole was kept in a moist chamber. If the solution was attractive, the growing hyphse penetrated into the stomata, whereas in the absence of the solution they showed no tendency to do so. Similarly, spores sown on the perforated plate sent hyphse downwards through the holes when the plate was floating on attractive solutions, but not otherwise. Mole-. FiG. 94. — Upper figur Stock Photo")
RMRE0GA1–. Experimental morphology. Protoplasm; Growth. §2] UPON THE DIRECTION OF GROWTH 341 by a fine needle point. The solutions were injected into the leaf of Tradescantia, spores were sown upon its stoma-bearing surface, and the whole was kept in a moist chamber. If the solution was attractive, the growing hyphse penetrated into the stomata, whereas in the absence of the solution they showed no tendency to do so. Similarly, spores sown on the perforated plate sent hyphse downwards through the holes when the plate was floating on attractive solutions, but not otherwise. Mole-. FiG. 94. — Upper figur
RMPG00J4–. Lessons in botany. Botany. 204. BOTANY. organs. Now the fern leaf bears the spores and the spore forms the prothallium. So it is in the flowering plants. The stairen bears the small spores—pollen grains—and the pollen grain. Fig- 182. Diagrammatic section of a flower. Ke, calyx; K, corolla ; A the filament, and <z, the anther, of the stamen ; p, pollen-cells, some in the anther, others on the stigma ; F, the ovary, surmounted by the style, g, and the stigma, n (this ovary contains one ovule, which has a single coat, i, enclosing the ovule-body, S) ; em, the embryo-sac; E, germ-cell; /j, a
RMRDWFGW–. Essentials of botany. Botany; Botany. THE FUNGI 257 Examine first with m.p., and then with h.p. Note : (a) The forms of the cluster-cups at various stages of growth. Compare with the cup on an anemone leaf, shown in Fig. 181. (b) The structure of the cup, surrounded by a layer of mycelium, next to which comes theperidium, or wall of the cup. The latter is filled with chains of spores (cecidiospores). Draw the cup with its contents. (c) The size and shape of the mature ^ spores which separate from the ends of the chains. (rf) The cavities, smaller than the cluster cups and on the opposite sur
RMPG0HNE–. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 462 DAVALLIA DEAKBORN tion in a temperature of 65-70° and kept moderately moist, a number of small plants will develop from the dormant eyes, which may be separately potted as soon as of sufficient size. Spores of Davallia should be sown on a fine compost of soil, leaf-mold or peat and sand in equal parts, and
RMRDHBR5–. Outlines of plant life : with special reference to form and function . Botany. 38 OUTLINES OF PLANT LIFE. mount and show the mycelium of the fungus consisting of tangled hyphse ramifying among the cells of leaf. (TJT[ 44, 45.) Examine a dried leaf. Observe 2. The white blisters (sfore beds) here and there on the surface ; the thin membrane (the epidermis of the leaf) by which they are covered ; in older blisters the cracking and final disappearance of this skin. (1 269, fig. 141.) 3. The white powdery spores which jar out or can be dislodged vifith needle. 47. Fusion.—When the hyphae of a fu
RMPG3NJ0–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. AUTOBASIDIOMYCETES 441 distortions on young shoots of Andromeda lignstrina. Galls of this latter form are hollow, bag-like structures which may attain a length of five or six inches. Richards employed the large form on Andromeda and Exo- basidium Vaccinii in some cross inoculations and was able to develop the leaf spot form of the gall on Andromeda from Exo- basidium Vaccinii, and also to produce this same form through spores from the galls on Andromeda. He also directs attention t
RMRDA879–. Beginners' botany. Botany. Fig. 256. — Common Polypode Fern. Polypodium vulgare. Fig. 257. —Sori and Spo- rangium OF Polypode. A chain of cells lies along the top of the sporangium, which springs back elasti- cally on drying, thus dis- seminating the spores. Fig. 258. —The Brake Fruits underneath THE Revolute Edges of the Leaf. The sporangia are collected into little groups, known as sori (singular, sorus) or fruit-dots. Each sorus is covered with a thin scale or shield, known as an indusium. This indusium sepa- rates from the frond at its edges, and the sporangia are exposed. Not all ferns
RMRE2FXB–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 382 HEMILEIA On leaves of Gattleya Dowiana Batem., imported from Costa Rica, 1899. (Fig. 285.) Only a small patch of Rust was present on the leaf when the plant was received from Costa Rica, but this continued to increase in size and the falling spores infected other leaves. The uredospores germinated readily, and young Gattleya leaves, inoculated on the under surface, produced mature uredospores in thirteen days. No success attended the efforts to infect other orchids, not belonging to the genus Gattleya. This
RMRDWCWD–. Botany, with agricultural applications. Botany. Fig. 356. — Stage of the Wheat Rust on the Barberry bush, Berberis wlgaris. Left, leaf of Barberry, showing the affected areas which are red- dish, much thickened, and contain many cup-like depressions; right, a very much enlarged section through the affected area of the leaf, showing one of the cvips (c) with chains of aeciospores (X 200). The very small spores at (p) are the pycniospores.. Fig. 357. —Diagram showing the life cycle of the Wheat Rust. A, wheat plants; B, barberry bush; u, urediniospore; i, teleospore; s, basidiospores; a, aecio
RMRDGYYT–. A textbook of botany for colleges and universities ... Botany. Fig. 931. —A leaf of Ficus religiosa^ a tree of the tropical rain forest, showing a so- called dripping point (d). —After Stahl. Fig. 932. — A portion of a leaf of a tropical Asplenium^ illustrating reproduction by leaves; on the under sides of the ultimate leaf divisions (pinnules) are fruit dots or sori (i), in which are sporangia with their spores; on the upper sides of the pinnules are bulbils (6), which here have germi- nated while connected with the parent plant, giving rise to bulblings whose leaves (/) already are conspic
![. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 37.—Horsetail {"Egtiue- tvm Telmateia: 1, top of fertile stem, 'with cone of spores; 2, a scale from the cone, with its spore-cases and stalk; 3, a spore with its four filaments un- coiled ; 4, spore with coiled filaments. The leaves sleep at night. The little starchy fruits, about the size of peppercorns, are Fig. 38.—ManUea macropus^ or Salvatrix; showing sporocarps on the creeping root, near the hases of the long leaf-stalks. Plant entire. edible. Those of the Stock Photo](https://c8.alamy.com/comp/RDHCWT/botany-for-academies-and-colleges-consisting-of-plant-development-and-structure-from-seaweed-to-clematis-botany-1889-fig-37horsetail-quotegtiue-tvm-telmateia-1-top-of-fertile-stem-with-cone-of-spores-2-a-scale-from-the-cone-with-its-spore-cases-and-stalk-3-a-spore-with-its-four-filaments-un-coiled-4-spore-with-coiled-filaments-the-leaves-sleep-at-night-the-little-starchy-fruits-about-the-size-of-peppercorns-are-fig-38manuea-macropus-or-salvatrix-showing-sporocarps-on-the-creeping-root-near-the-hases-of-the-long-leaf-stalks-plant-entire-edible-those-of-the-RDHCWT.jpg ". Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 37.—Horsetail {"Egtiue- tvm Telmateia: 1, top of fertile stem, 'with cone of spores; 2, a scale from the cone, with its spore-cases and stalk; 3, a spore with its four filaments un- coiled ; 4, spore with coiled filaments. The leaves sleep at night. The little starchy fruits, about the size of peppercorns, are Fig. 38.—ManUea macropus^ or Salvatrix; showing sporocarps on the creeping root, near the hases of the long leaf-stalks. Plant entire. edible. Those of the Stock Photo")
RMRDHCWT–. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 37.—Horsetail {"Egtiue- tvm Telmateia: 1, top of fertile stem, 'with cone of spores; 2, a scale from the cone, with its spore-cases and stalk; 3, a spore with its four filaments un- coiled ; 4, spore with coiled filaments. The leaves sleep at night. The little starchy fruits, about the size of peppercorns, are Fig. 38.—ManUea macropus^ or Salvatrix; showing sporocarps on the creeping root, near the hases of the long leaf-stalks. Plant entire. edible. Those of the
![. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 37.—Horsetail {"Egtiue- tvm Telmateia: 1, top of fertile stem, 'with cone of spores; 2, a scale from the cone, with its spore-cases and stalk; 3, a spore with its four filaments un- coiled ; 4, spore with coiled filaments. The leaves sleep at night. The little starchy fruits, about the size of peppercorns, are Fig. 38.—ManUea macropus^ or Salvatrix; showing sporocarps on the creeping root, near the hases of the long leaf-stalks. Plant entire. edible. Those of the Stock Photo](https://c8.alamy.com/comp/RDHCX3/botany-for-academies-and-colleges-consisting-of-plant-development-and-structure-from-seaweed-to-clematis-botany-1889-fig-37horsetail-quotegtiue-tvm-telmateia-1-top-of-fertile-stem-with-cone-of-spores-2-a-scale-from-the-cone-with-its-spore-cases-and-stalk-3-a-spore-with-its-four-filaments-un-coiled-4-spore-with-coiled-filaments-the-leaves-sleep-at-night-the-little-starchy-fruits-about-the-size-of-peppercorns-are-fig-38manuea-macropus-or-salvatrix-showing-sporocarps-on-the-creeping-root-near-the-hases-of-the-long-leaf-stalks-plant-entire-edible-those-of-the-RDHCX3.jpg ". Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 37.—Horsetail {"Egtiue- tvm Telmateia: 1, top of fertile stem, 'with cone of spores; 2, a scale from the cone, with its spore-cases and stalk; 3, a spore with its four filaments un- coiled ; 4, spore with coiled filaments. The leaves sleep at night. The little starchy fruits, about the size of peppercorns, are Fig. 38.—ManUea macropus^ or Salvatrix; showing sporocarps on the creeping root, near the hases of the long leaf-stalks. Plant entire. edible. Those of the Stock Photo")
RMRDHCX3–. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 37.—Horsetail {"Egtiue- tvm Telmateia: 1, top of fertile stem, 'with cone of spores; 2, a scale from the cone, with its spore-cases and stalk; 3, a spore with its four filaments un- coiled ; 4, spore with coiled filaments. The leaves sleep at night. The little starchy fruits, about the size of peppercorns, are Fig. 38.—ManUea macropus^ or Salvatrix; showing sporocarps on the creeping root, near the hases of the long leaf-stalks. Plant entire. edible. Those of the
![. Botany of the living plant. Botany. Fig. 377- Longitudinal section of a leaf of Wheat, sliowing a tuft of Uredo-spores bursting tlnrough tfie epidermis. Highly magnified, (.fter ]farshall Ward.) leaves of the Wheat plant, which results again in the growth of a mycelium bearing the uredo-spores. There are thus two stages of the disease, the one on the Wheat or other Grasses, the other on the Barberry. Long before it was proved that these two different- looking diseases were only stages in one life-history, a connection between the two had been suspected. It was thought that the. I-IG. 37S. Stock Photo](https://c8.alamy.com/comp/RDY61M/botany-of-the-living-plant-botany-fig-377-longitudinal-section-of-a-leaf-of-wheat-sliowing-a-tuft-of-uredo-spores-bursting-tlnrough-tfie-epidermis-highly-magnified-fter-farshall-ward-leaves-of-the-wheat-plant-which-results-again-in-the-growth-of-a-mycelium-bearing-the-uredo-spores-there-are-thus-two-stages-of-the-disease-the-one-on-the-wheat-or-other-grasses-the-other-on-the-barberry-long-before-it-was-proved-that-these-two-different-looking-diseases-were-only-stages-in-one-life-history-a-connection-between-the-two-had-been-suspected-it-was-thought-that-the-i-ig-37s-RDY61M.jpg ". Botany of the living plant. Botany. Fig. 377- Longitudinal section of a leaf of Wheat, sliowing a tuft of Uredo-spores bursting tlnrough tfie epidermis. Highly magnified, (.fter ]farshall Ward.) leaves of the Wheat plant, which results again in the growth of a mycelium bearing the uredo-spores. There are thus two stages of the disease, the one on the Wheat or other Grasses, the other on the Barberry. Long before it was proved that these two different- looking diseases were only stages in one life-history, a connection between the two had been suspected. It was thought that the. I-IG. 37S. Stock Photo")
RMRDY61M–. Botany of the living plant. Botany. Fig. 377- Longitudinal section of a leaf of Wheat, sliowing a tuft of Uredo-spores bursting tlnrough tfie epidermis. Highly magnified, (.fter ]farshall Ward.) leaves of the Wheat plant, which results again in the growth of a mycelium bearing the uredo-spores. There are thus two stages of the disease, the one on the Wheat or other Grasses, the other on the Barberry. Long before it was proved that these two different- looking diseases were only stages in one life-history, a connection between the two had been suspected. It was thought that the. I-IG. 37S.
RMRDDBF4–. The fungi which cause plant disease . Plant diseases; Fungi. FiQ. 159.—^A single perithecium of A. vaccinii taken from a pure culture on corn meal. After Shear. Fig. 160.—Acan- thorhynchus; a germinating as- cospore bearing the peculiar appressorium, 17, view from above. After Shear. old fallen leaves. In culture, however, it produces abundant peri- thecia. When on the leaf the perithecia are subepidermal and are sparsely scattered over the lower surface. No conidial or pycnidial form is known. Remarkable appressoria are produced by the germ tubes from the spores, Fig. 160. Sphseriacese (p.
RMRDWA96–. Botany for high schools and colleges. Botany. UBEDINB^. 313 â walled bodies (teleutospores,* or pseudo-spores), which are one, two, three, or many-celled (Fig. 316, III., t). Like the uredospores, the teleutospores are produced beneath the. Fig. 217.âIhKdinia graminis. A, germinating teleutosporc, t^ with promyceliuni forming the sporidia. sp. B. similar promyceliuni, with sporidia. C, a sporidium, ^p, germinating on a piece of the under side of a leaf of the Barberry, the mycelium, i, penetrating the epidermis. D, a terminating uredospore, u, fourteen hours alter being placed on the leaf of
![. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. o4G. Under side of a segmeut of Fern leaf, showing: sori. 345. Rhizome and leaves of the Rock Feru. 347. Section of sorus: s, sporangia; /, indusiuni ; b, blade of the leaf. — WossiDLo. 479. Spores are borne in small sporangia (Fig. 348), clustered in groups on the under sides of the leaves (Fig. 347). Each cluster, or "fruit spot" (so)-us), is in many species shielded by a membrane (iitdiisium, i). Stock Photo](https://c8.alamy.com/comp/RDTNBE/outlines-of-botany-for-the-high-school-laboratory-and-classroom-based-on-grays-lessons-in-botany-prepared-at-the-request-of-the-botanical-dept-of-harvard-university-botany-botany-o4g-under-side-of-a-segmeut-of-fern-leaf-showing-sori-345-rhizome-and-leaves-of-the-rock-feru-347-section-of-sorus-s-sporangia-indusiuni-b-blade-of-the-leaf-wossidlo-479-spores-are-borne-in-small-sporangia-fig-348-clustered-in-groups-on-the-under-sides-of-the-leaves-fig-347-each-cluster-or-quotfruit-spotquot-so-us-is-in-many-species-shielded-by-a-membrane-iitdiisium-i-RDTNBE.jpg ". Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. o4G. Under side of a segmeut of Fern leaf, showing: sori. 345. Rhizome and leaves of the Rock Feru. 347. Section of sorus: s, sporangia; /, indusiuni ; b, blade of the leaf. — WossiDLo. 479. Spores are borne in small sporangia (Fig. 348), clustered in groups on the under sides of the leaves (Fig. 347). Each cluster, or "fruit spot" (so)-us), is in many species shielded by a membrane (iitdiisium, i). Stock Photo")
RMRDTNBE–. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. o4G. Under side of a segmeut of Fern leaf, showing: sori. 345. Rhizome and leaves of the Rock Feru. 347. Section of sorus: s, sporangia; /, indusiuni ; b, blade of the leaf. — WossiDLo. 479. Spores are borne in small sporangia (Fig. 348), clustered in groups on the under sides of the leaves (Fig. 347). Each cluster, or "fruit spot" (so)-us), is in many species shielded by a membrane (iitdiisium, i).
RMRDW9PG–. Botany for high schools and colleges. Botany. UBEDINE^^. 313 walled bodies [teleutospores,* or pseudo-spores), which are one, two, three, or many-celled (Fig. 216, ///., t). Like the uredospores, the teleutospores are produced beneath the. Fig. iVl.—Pucdnia graminis. A, germinating teleutospore, *, witti promycelium forming tlie sporidia. sp. B, similar promycelium, with sporidia. C, a sporidium, ep germinating on a piece of the under side of a leaf of the Barberry, the rayoelium, i penetrating the epidermis. D, a aerminating uredospore,«, fourteen hours alter being placed on the leaf of a g
RMRDH2R8–. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. MOSSES WITH A HAND-LENS 173. Figure 100. Scapania nemorosa. Branch X 2. Leaf X 10. tinctly longer than broad and are strongly ciliate-dentate. The leaves are stiff and only a little larger above. The perianth mouth is ciliate-dentate. The spores mature in spring. S. UNDULATA (L.) Dum., the Aquatic Scapania, is less common than the pre- ceding and grows on stones in streams or in very wet places. It is green, or frequently red or dark brownish-red.
RMRDDA0A–. Lessons in botany. Botany. 204. BOTANY. organs. Now the fern leaf bears the spores and the spore forms the prothallium. So it is in the flowering plants. The stairen bears the small spores—pollen grains—and the pollen grain. Fig- 182. Diagrammatic section of a flower. Ke, calyx; K, corolla ; A the filament, and <z, the anther, of the stamen ; p, pollen-cells, some in the anther, others on the stigma ; F, the ovary, surmounted by the style, g, and the stigma, n (this ovary contains one ovule, which has a single coat, i, enclosing the ovule-body, S) ; em, the embryo-sac; E, germ-cell; /j, a
![. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 623 tapering, obtuse, basally dark-brown, slightly constricted at the septa, 5 to 9 times cross-septate and 0-5 times longitudinally septate. It causes injury on carnation leaves and stems. A. solani (E. & M.) Jones & Grout. '"• ^''''"'-'" Spots brown, circular to elliptic, concentrically zonate, amphige- nous, irregularly scattered over the leaf surface; mycelium. Fio. 422.—A. solani, 2, spores germinating and penetrating the living potato leaf; 5, showing cateuulatiou of Stock Photo](https://c8.alamy.com/comp/RDE4XM/the-fungi-which-cause-plant-disease-plant-diseases-fungi-the-fungi-which-cause-plant-disease-623-tapering-obtuse-basally-dark-brown-slightly-constricted-at-the-septa-5-to-9-times-cross-septate-and-0-5-times-longitudinally-septate-it-causes-injury-on-carnation-leaves-and-stems-a-solani-e-amp-m-jones-amp-grout-quot-quot-quot-spots-brown-circular-to-elliptic-concentrically-zonate-amphige-nous-irregularly-scattered-over-the-leaf-surface-mycelium-fio-422a-solani-2-spores-germinating-and-penetrating-the-living-potato-leaf-5-showing-cateuulatiou-of-RDE4XM.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 623 tapering, obtuse, basally dark-brown, slightly constricted at the septa, 5 to 9 times cross-septate and 0-5 times longitudinally septate. It causes injury on carnation leaves and stems. A. solani (E. & M.) Jones & Grout. '"• ^''''"'-'" Spots brown, circular to elliptic, concentrically zonate, amphige- nous, irregularly scattered over the leaf surface; mycelium. Fio. 422.—A. solani, 2, spores germinating and penetrating the living potato leaf; 5, showing cateuulatiou of Stock Photo")
RMRDE4XM–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 623 tapering, obtuse, basally dark-brown, slightly constricted at the septa, 5 to 9 times cross-septate and 0-5 times longitudinally septate. It causes injury on carnation leaves and stems. A. solani (E. & M.) Jones & Grout. '"• ^''''"'-'" Spots brown, circular to elliptic, concentrically zonate, amphige- nous, irregularly scattered over the leaf surface; mycelium. Fio. 422.—A. solani, 2, spores germinating and penetrating the living potato leaf; 5, showing cateuulatiou of
RMRDJ2R3–. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. 63. The Ferns have leaf- like fronds -which bear the spores, though the spore-bear- ing fronds are often trans- 7 formed, as in the Osmunda (Fig. 33). The fronds are forJe-vdned (Fig. 33, a) and cirdnate in bud,—rolled like isier (Fig. 34). The spore- cases are in groups called Sori (L. so7'us, a heap), on the under surface of the frond; either at the end of the veins and near the margin (Fig. 34) or variously arranged along the veins (Figs. 33,35). The fronds vary Fio. Ka
RMRE38A4–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 27. P. Poai-um. An seoidio- spore germinating on leaf of Poa annua, x 180.. Fig. 26. P. Poaruin. Vertical section through edge of secidium; showing a, the crushed cells of the upper myce- lium, pushed on one side ; 6, the chain of peridium-cells; c, the spore bed, giviBg rise to d, the chains of Eecidio- spores. X 600. The black dots are the nucleoli; one ascidiospore-mother- cell has three nuclei. case in most of the higher forms of the Uredinales, arises deep in the leaf, and the densely packed knot of h
RMRDTWAE–. Textbook of botany. Botany. 62 TEXTBOOK OF BOTANY finally breaks the epidermis of the leaf. Each cell of the basal layer, like each of the other cells of the fungus up to this time, contains a single nucleus. These basal cells become joined in twos by a dis- solving of part of the walls between each pair of adjoining cells (Fig. 27, D, a) ; the two cells of each pair have now become a single cell of ir-. FiG. 27. — A, a section through a portion of an infected barberry leaf bearing spring spores on the lower surface and spermatia on the upper sur- face. B, a section through a cluster cup, sh
RMRE382K–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON LILIACE.E 119 interrupted and anastomosing, brown, 28—44 x 22—30 ^; epi- spore 2—3} yu, thick ; pedicels hyaline, slender, deciduous.. Fig. 70. U. Lilii. a, leaf of Liliuin candiduvi, with recidia ; b, another, witli teleuto-sori, nat. size; c, cells of peridium, iu section and inner face-view; d, teleutospores ; e, teleutospore seen from above ; /, ^cidiospore, all x 600. On Liliuin candidum. Kew Gardens; also at Birmingham, 1911-3 (C.W.Lowe). /Ecidia in Aprd, May; mature teleuto- spores from June. (Fig. 70
RMRDD07C–. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 462 DAVALLIA DEAKBORN tion in a temperature of 65-70° and kept moderately moist, a number of small plants will develop from the dormant eyes, which may be separately potted as soon as of sufficient size. Spores of Davallia should be sown on a fine compost of soil, leaf-mold or peat and sand in equal parts, and
RMRDJ5N1–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. AUTOBASIDIOMYCETES 441 distortions on young shoots of Andromeda lignstrina. Galls of this latter form are hollow, bag-like structures which may attain a length of five or six inches. Richards employed the large form on Andromeda and Exo- basidium Vaccinii in some cross inoculations and was able to develop the leaf spot form of the gall on Andromeda from Exo- basidium Vaccinii, and also to produce this same form through spores from the galls on Andromeda. He also directs attention t
RMRE1GH3–. Fungi; their nature, influence, and uses;. Fungi. 144 FUNGI. end of its vegetation. The two forms of spores in this genus are constantly found on the same leaf, and in the same pulvinule, but generally the pulverulent spores abound at the commence- ment of the summer. The reniform sporules begin to germinate in a great number as soon as they are free; some few extend a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Cook
RMRDXRWW–. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. Fig. 102, ^ 1. I^eaf of Cheat, showing numerous small specks, the perithecia of Septoria Bromi, the spores in the perithecia shown at 2. [%'V.n^:'i^:^^l.:- ;,:-';-.;i±l-.:.l.!'A' In a somewhat extended account of this disease Cobb states that the entire plant is not always involved. The fungus is variable, its character depending upon the host which it attacks. On Poa annua the leaf is mainly involved and in many cases is totally d
RMRDXT58–. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. EUTHAI.LEPHYTA—EUMYCETES—RUSTS 231. Fig. 67. Qover Sust. Uromyces Trifolii. (Hedw.) I,ev. 1. Aecidium spores; above,, two cluster cups in which the aecidiospores are found. 2. White clover leaf showing the distortions produced by the aecidium stage. 3. Red clover leaf showing clusters of uredo spores. 4. Uredo spores. 5. Teleuto spores. 6. An uredo cluster more magnified than in 3. Figs. 1, 2, and 3 after Miss Howell. Remainder by Mi
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