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Fern sorus Stock Photos and Images
RF2JK7TC2–Fern in the sky. Clusters of sporangia on a fern. Groupes de sporanges on fern leaves. Reproduction of olypodiopsida or Polypodiophyta. Beaty in natur
RF2E8Y77E–Fronds of kangaroo fern Zealandia pustulata. Taieri River Scenic Reserve. Otago. South Island. New Zealand.
RF2GP45D1–Fronds of kangaroo fern Zealandia pustulata. Taieri River Scenic Reserve. Otago. South Island. New Zealand.
RMEDA812–Fertile frond of Intermediate Polypody, in the East Lyn River valley, Exmoor National Park, Devon.
RF2P8R2TN–Fern-sporophyte leaves (probably Bracken (Pteris aquilina)); spores and sporangia - linear fruit dots (sori, sorus). Ultra macro
RM2PGGTG1–Seven-spot Ladybird (Coccinella septempunctata) adult, resting on Maidenhair Spleenwort (Asplenium trichomanes) frond with sori in garden
RM2RX22F9–Angelsweet is the only native shoot that grows on mostly mossy bark when humidity is sufficient (Common (Polypodium vulgare) Polypody the sori are
RMD92ANJ–Close up of a delicate shield fern frond structure backlit against bluebell forest latter part of afternoon in springtime
RM2AFNJ2D–. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. it-dot or sorus (plural sori), and the shield-like scale is an indiisium. In the maidenhair, thesori are marginal, and the reflexed edge of thefrond forms the indusium. 426. The so-called sensitive fern, which is verycommon in low grounds, is illustrated in Fig. 359.At the right is a leafy or sterile frond, and atA a fertile frond. This fertile frond has the samefundamental plan or structure asthe other one has, but the edgesof the lobes or divisions arerolled backwards and form acovering for
RMPFM4G6–. 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. A sorus or fruit- dot of a Fern. greater number of genera, ranging from 150 to 250, or even more. In the very unequal treatment by Diels in Die Natiii'liolien Pflanzeufamilien (Engler-Prantl), some 120 genera are recognized. A somewliat similar difference prevails in regard to the number of species. The Synopsi
![Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Rock fern, polypody. Notice the underground stem giving off roots {R) from its under surface, and leaves (C) from the upper surface. .The com- pound leaf or frond may bear sori (5) on the under side of the leaflets. Section of sorus; s, sporangia; i, indusium, or covering; b, blade of the leaf. — Wossidlo. If fresh material is obtainable, it will be possible to see how the spores get out of the sporangium. A drop of glycerine run Stock Photo](https://c8.alamy.com/comp/RWPMM1/elements-of-biology-a-practical-elements-of-biology-a-practical-text-book-correlating-botany-zoology-and-human-physiology-elementsofbiolog00hunt-year-c1907-rock-fern-polypody-notice-the-underground-stem-giving-off-roots-r-from-its-under-surface-and-leaves-c-from-the-upper-surface-the-com-pound-leaf-or-frond-may-bear-sori-5-on-the-under-side-of-the-leaflets-section-of-sorus-s-sporangia-i-indusium-or-covering-b-blade-of-the-leaf-wossidlo-if-fresh-material-is-obtainable-it-will-be-possible-to-see-how-the-spores-get-out-of-the-sporangium-a-drop-of-glycerine-run-RWPMM1.jpg "Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Rock fern, polypody. Notice the underground stem giving off roots {R) from its under surface, and leaves (C) from the upper surface. .The com- pound leaf or frond may bear sori (5) on the under side of the leaflets. Section of sorus; s, sporangia; i, indusium, or covering; b, blade of the leaf. — Wossidlo. If fresh material is obtainable, it will be possible to see how the spores get out of the sporangium. A drop of glycerine run Stock Photo")
RMRWPMM1–Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Rock fern, polypody. Notice the underground stem giving off roots {R) from its under surface, and leaves (C) from the upper surface. .The com- pound leaf or frond may bear sori (5) on the under side of the leaflets. Section of sorus; s, sporangia; i, indusium, or covering; b, blade of the leaf. — Wossidlo. If fresh material is obtainable, it will be possible to see how the spores get out of the sporangium. A drop of glycerine run
RMMA76TF–. Elementary biology; an introduction to the science of life . I I Fig. 127. Spores of fern (7, back of a fern leaflet, showing arrangement of sori (singular, sorns), or clusters of spore cases ; b, section through a sorus, showing spore cases with inclosing layer of thin tissue ; c, single spore case, greatly enlarged ; d, same bursting open and dis- charging spores by the sudden straightening out of a row of thick-walled cells ; e, spores, greatly enlarged ; /, spore germinating into a new plant the leafy stem. Ferns produce spores in little capsules found in groups on the undersurface of th
RMD92AGW–Close up of a delicate shield fern frond structure backlit against bluebell forest latter part of afternoon in springtime
RM2AXGRPD–Nature and development of plants . a—s, sorus enlarged. F,Woodsia.—After Sprague. fern, Asplenium, is characterized by elongated sori arrangedobliquely to the midrib upon the upper side of the veinlets.The indusium is attached on one side of the sorus along its entirelength (Fig. 222, B). The chain fern, Woodwardia, differs 298 FORMS OF FILICALES from Asplenium in having the sori arranged in chain-like rowsparallel to its midrib (Fig. 225, B). In several genera of fernsthe indusium is partly or entirely inferior. Thus in the bladderfern, Filix, the partly inferior indusium covers the circular
RMPFM4GE–. 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. PERN FERN 573. A sorus or fruit- dot of a Fern. greater number of genera, ranging from 150 to 250, or even more. In the very unequal treatment by Diels in Die Natiii'liolien Pflanzeufamilien (Engler-Prantl), some 120 genera are recognized. A somewliat similar difference prevails in regard to the number of speci
![Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Section of sorus; s, sporangia; i, indusium, or covering; b, blade of the leaf. — Wossidlo. If fresh material is obtainable, it will be possible to see how the spores get out of the sporangium. A drop of glycerine run under the cover slip of a slide holding a fresh unopened sporangium soon causes the sporangium to snap open. If the sporangium is dry and on the under surface of the fern leaf, the spores v.ill be scattered for a consi Stock Photo](https://c8.alamy.com/comp/RWPMM5/elements-of-biology-a-practical-elements-of-biology-a-practical-text-book-correlating-botany-zoology-and-human-physiology-elementsofbiolog00hunt-year-c1907-section-of-sorus-s-sporangia-i-indusium-or-covering-b-blade-of-the-leaf-wossidlo-if-fresh-material-is-obtainable-it-will-be-possible-to-see-how-the-spores-get-out-of-the-sporangium-a-drop-of-glycerine-run-under-the-cover-slip-of-a-slide-holding-a-fresh-unopened-sporangium-soon-causes-the-sporangium-to-snap-open-if-the-sporangium-is-dry-and-on-the-under-surface-of-the-fern-leaf-the-spores-vill-be-scattered-for-a-consi-RWPMM5.jpg "Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Section of sorus; s, sporangia; i, indusium, or covering; b, blade of the leaf. — Wossidlo. If fresh material is obtainable, it will be possible to see how the spores get out of the sporangium. A drop of glycerine run under the cover slip of a slide holding a fresh unopened sporangium soon causes the sporangium to snap open. If the sporangium is dry and on the under surface of the fern leaf, the spores v.ill be scattered for a consi Stock Photo")
RMRWPMM5–Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] Section of sorus; s, sporangia; i, indusium, or covering; b, blade of the leaf. — Wossidlo. If fresh material is obtainable, it will be possible to see how the spores get out of the sporangium. A drop of glycerine run under the cover slip of a slide holding a fresh unopened sporangium soon causes the sporangium to snap open. If the sporangium is dry and on the under surface of the fern leaf, the spores v.ill be scattered for a consi
RM2AWTNFK–Text-book of botany, morphological and physiological . ta it is bilocular,in P. americana trilocular, in P. glohtdifera quadrilocular; each chamber bears on itsperipheral side a cushion running from the base to the apex of the sporocarpand projecting inwards, behind which runs a fibro-vascular bundle. On thiscushion a number of sporangia are formed, the lower of which produce macro-spores, the upper microspores. A cushion of this kind bearing sporangia n.ay be 394 VASCULAR CRYPTOGAMS. compared to the sorus of a Fern. In INIarsilea the processes are still more complicated.In this genus the spor
![. Heredity and evolution in plants. Heredity; Plants. 8 HEREDITY AND EVOLUTION IN PLANTS cular plants. These leaves perform all the functions performed by the foliage-leaves of other plants, the most important of which are the manufacture of organic, car- bohydrate food from inorganic raw materials (photosyn- thesis), and the giving off of water vapor from within (transpiration). 4. Spore-bearing Leaves.—The second type of fern- leaf bears, on its underside, numerous "fruit-dots" or sort (singular sorus) (Figs. 7 and 8). These structures have to do with reproduction. A single sorus o Stock Photo](https://c8.alamy.com/comp/PG2RNW/heredity-and-evolution-in-plants-heredity-plants-8-heredity-and-evolution-in-plants-cular-plants-these-leaves-perform-all-the-functions-performed-by-the-foliage-leaves-of-other-plants-the-most-important-of-which-are-the-manufacture-of-organic-car-bohydrate-food-from-inorganic-raw-materials-photosyn-thesis-and-the-giving-off-of-water-vapor-from-within-transpiration-4-spore-bearing-leavesthe-second-type-of-fern-leaf-bears-on-its-underside-numerous-quotfruit-dotsquot-or-sort-singular-sorus-figs-7-and-8-these-structures-have-to-do-with-reproduction-a-single-sorus-o-PG2RNW.jpg ". Heredity and evolution in plants. Heredity; Plants. 8 HEREDITY AND EVOLUTION IN PLANTS cular plants. These leaves perform all the functions performed by the foliage-leaves of other plants, the most important of which are the manufacture of organic, car- bohydrate food from inorganic raw materials (photosyn- thesis), and the giving off of water vapor from within (transpiration). 4. Spore-bearing Leaves.—The second type of fern- leaf bears, on its underside, numerous "fruit-dots" or sort (singular sorus) (Figs. 7 and 8). These structures have to do with reproduction. A single sorus o Stock Photo")
RMPG2RNW–. Heredity and evolution in plants. Heredity; Plants. 8 HEREDITY AND EVOLUTION IN PLANTS cular plants. These leaves perform all the functions performed by the foliage-leaves of other plants, the most important of which are the manufacture of organic, car- bohydrate food from inorganic raw materials (photosyn- thesis), and the giving off of water vapor from within (transpiration). 4. Spore-bearing Leaves.—The second type of fern- leaf bears, on its underside, numerous "fruit-dots" or sort (singular sorus) (Figs. 7 and 8). These structures have to do with reproduction. A single sorus o
RM2AXD89P–Plants and their ways in South Africa . .—Longitudinal section through the sporophyte of Pellia epiphylla^R, rhizoids ; I, involucre ; F, foot of sporophyte ; Se, seta ; C, capsule ; W.wall of capsule ; Wa, wall of archegonium ; S, spores ; N, remains of neck ofarchegonium ; A, unfertilized archegonium (highly magnified). (From Evans Intermediate Text Book of Botany.) are the fern spores, contained within clusters of spore-casesforming the dots. A dot is called a sorus (plural, sori).When the spores are ripe and have fallen in moist places, theyburst their brown walls and begin to grow. In a f
RMPG01PT–. Our ferns in their haunts; a guide to all the native species. Ferns. KEY TO THE GENERA.. Qat^' Dickfiorua t t Indusium cup-shaped, fixed be- neath the sorus ; sori minute on a tooth of the ultimate pinnules ; fronds very finely cut. Boulder fern. . Dicksonia. 229. 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.. Clute, Willard Nelson, b. 1869. New York, F. A. Stokes Co
RM2AJCN3D–Elementary botany . OG Y. middle portion toward the end. This is because of the shorterpinnae here. 531. Fruit dots (sorus, indusium).—If we examine theunder side of such short pinnae of the Christmas fern we see thatthere are two rows of small circular dots, one row on either side ofthe pinna. These are called the fruitdots, or sori (a single one is a sorus). Ifwe examine it with a low power of the mi-croscope,or with ap o c k e tlens, wesee thatthere is aci re ulardisk whichc o versmore orless com-pletelyveryminute objects,usual-ly the ends of thelatter projecting just be-yond the edge if th
RMPG42AN–. Botany for agricultural students . Botany. SPOROPHYTE 429 {dichotomous branching); and the leaves develop in the spring by unrolling from the base, much like unrolling a bolt of cloth, until their final length is reached [circinate vernation). They have epidermis, stomata, and chlorenchyma or food-making tissue, and through their veins run well developed vascular bundles.. Fig. 380. — A cross section of a Fern stem, showing the epidermis (e), the cortex (c), the vascular cyUnder (v), and the pith (p). The sporangia occur in the rusty looking spots, called sori (singular sorus), which are for
RM2CF4CJF–. The fern lover's companion; a guide for the Northeastern States and Canada. Indusiuiii cor-date, fixed bjthe sinus. WoodFerns. Aspi- (Uiim. Indusiuni hood-shaped, fixedcentrally behind the sorus andarching over it, soon wither-ing, often illusive. Fronds twoto three pinnate, very grace-ful. Moisture-loving species.Bladder Ferns. Cysfopferis..
RMPG01PN–. Our ferns in their haunts; a guide to all the native species. Ferns. Qat^' Dickfiorua t t Indusium cup-shaped, fixed be- neath the sorus ; sori minute on a tooth of the ultimate pinnules ; fronds very finely cut. Boulder fern. . Dicksonia. 229. Campti. 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.. Clute, Willard Nelson, b. 1869. New York, F. A. Stokes Co
RM2CF4D64–. The fern lover's companion; a guide for the Northeastern States and Canada. 38 The Fern Lovers Companion. Indusiuiii cor-date, fixed bjthe sinus. WoodFerns. Aspi- (Uiim. Indusiuni hood-shaped, fixedcentrally behind the sorus andarching over it, soon wither-ing, often illusive. Fronds twoto three pinnate, very grace-ful. Moisture-loving species.Bladder Ferns. Cysfopferis.
RMPG25R6–. Beginners' botany. Botany. Fig. 254. —Christmas Fern. — Dryopteris acrostichoides; known also as Aspidium. Prominent among the spore- propagated plants are ferns. The common Christmas fern (so called because it remains green during winter) is shown in Fig. 254. The plant has no trunk. The leaves spring directly from the ground. The leaves of ferns are called fronds. They vary in shape, as other leaves do. Some of the fronds in Fig. 254 are seen to be narrower at the top. If these are examined more closely (Fig. 255), 176. Fig. 255. — Fruiting FtoND OF Christmas Fern. Sori at a. One sorus wit
RM2CHMWA3–. Heredity and evolution in plants . FIG. 9.—Cross-section through the marginal sorus of a sporophyll ofthe bracken fern (Pleris aquilina). I, palisade layer; fb, vascular bundle;xp, sporangium; in, indusium. (Greatly magnified.) as, for example, Polypodium, is composed of a cluster oftiny stalked cases. The cases contain minute unicellularreproductive bodies called spores, and the entire structureis a sporangium. The place where the sporangia areattached to the leaf is the sporangiophore1 (Fig. 9), andover all is often found a thin membranous covering, theindusium (Figs. 9 and 10). In some fe
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
RM2CHMX0M–. Heredity and evolution in plants . 4. Spore-bearing Leaves.^ The second type of fern-leaf bears, on its underside, numerous fruit-dots or sort(singular sorus) (Figs. 7 and 8). These structures have-to do with reproduction. A single sorus of such a fern. FIG. 9.—Cross-section through the marginal sorus of a sporophyll ofthe bracken fern (Pleris aquilina). I, palisade layer; fb, vascular bundle;xp, sporangium; in, indusium. (Greatly magnified.) as, for example, Polypodium, is composed of a cluster oftiny stalked cases. The cases contain minute unicellularreproductive bodies called spores, and
![. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. PTERIDOPHYTA. 707. Fig. 400.—Various Ferns. 1 Nephrolepis Duffl. 2 Tnehomanes LyallU. * Sorus of the same fern, with cup-ahaped investment seen in longitudinal section. * Shipidopteris peltata. ^ Polypodiwm serpens. ' VoTtlou ot ironi ot Oleichenia alpina. i Schizosajlstnlosa. 8 BotryahiUTn lanceolatwm. 9 Under side of a fragment of the frond of Gleichenia alpina; above the sporangia are concealed by a tuft of scales, below they are exposed, i" and " Fertile pinnule of Cyathea elegam. 12 Lo Stock Photo](https://c8.alamy.com/comp/PG2MXH/the-natural-history-of-plants-their-forms-growth-reproduction-and-distribution-botany-pteridophyta-707-fig-400various-ferns-1-nephrolepis-duffl-2-tnehomanes-lyallu-sorus-of-the-same-fern-with-cup-ahaped-investment-seen-in-longitudinal-section-shipidopteris-peltata-polypodiwm-serpens-vottlou-ot-ironi-ot-oleichenia-alpina-i-schizosajlstnlosa-8-botryahiutn-lanceolatwm-9-under-side-of-a-fragment-of-the-frond-of-gleichenia-alpina-above-the-sporangia-are-concealed-by-a-tuft-of-scales-below-they-are-exposed-iquot-and-quot-fertile-pinnule-of-cyathea-elegam-12-lo-PG2MXH.jpg ". The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. PTERIDOPHYTA. 707. Fig. 400.—Various Ferns. 1 Nephrolepis Duffl. 2 Tnehomanes LyallU. * Sorus of the same fern, with cup-ahaped investment seen in longitudinal section. * Shipidopteris peltata. ^ Polypodiwm serpens. ' VoTtlou ot ironi ot Oleichenia alpina. i Schizosajlstnlosa. 8 BotryahiUTn lanceolatwm. 9 Under side of a fragment of the frond of Gleichenia alpina; above the sporangia are concealed by a tuft of scales, below they are exposed, i" and " Fertile pinnule of Cyathea elegam. 12 Lo Stock Photo")
RMPG2MXH–. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. PTERIDOPHYTA. 707. Fig. 400.—Various Ferns. 1 Nephrolepis Duffl. 2 Tnehomanes LyallU. * Sorus of the same fern, with cup-ahaped investment seen in longitudinal section. * Shipidopteris peltata. ^ Polypodiwm serpens. ' VoTtlou ot ironi ot Oleichenia alpina. i Schizosajlstnlosa. 8 BotryahiUTn lanceolatwm. 9 Under side of a fragment of the frond of Gleichenia alpina; above the sporangia are concealed by a tuft of scales, below they are exposed, i" and " Fertile pinnule of Cyathea elegam. 12 Lo
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