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Osmunda claytoniana Black & White Stock Photos
RFT5YYAX–This is Osmunda Claytoniana plant. Its ferns are densely tufted. It has a variety of royal fern. This fern has curiously forked and crested fronds, vi
RM2CF31A9–. The fern lover's companion; a guide for the Northeastern States and Canada. Interrupted Fern. Osmunda Claytoniana The Fern Lovers Companion 181 The fronds have a lihiish-green tint; they mature theirspores about the last of May. The sterile fronds may bedistinguished from those of the cinnamon fern by nothaving retained, like those, a tuft of wool at the base ofeach pinna. Besides, in Claytons fern the fronds arebroader, blunter and thinner in texture, and the segmentsmore rounded; the fronds are also more inclined to curveoutwards. They turn yellow in the fall, at times flood-ing the woods
RMPG2RN0–. Heredity and evolution in plants. Heredity; Plants. LIPE HISTORY OF A FERN 13. Fig. 15.—Clayton's fern {Osmunda Claytoniana), showing sporophylls in the center, surrounded by foliage leaves.. 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.. Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's Son & Co.
RM2CF31DJ–. The fern lover's companion; a guide for the Northeastern States and Canada. S(M-i of ()s)niii<la Tt(iali.< (From WakTsN ?Fprns. nrnry Hull S; C.i.) 180 The Ferx Lovers Companion (2) Interrupted Fern. Claytons FernOsmunda Claytoniana Fronds pinnate, one to five feet liigh. Pinna? cut intooblong, obtuse lobes. Fertile fronds taller than the sterile,having from one to five pairs of intermediate pinn;e con-tracted and bearing sporangia.. Interrupted Fern. Osmunda Claytoniana The Fern Lovers Companion 181 The fronds have a lihiish-green tint; they mature theirspores about the last of May.
![. Fossil plants : for students of botany and geology . Paleobotany. XXl] OSMUNDACEAE 333 petioles and the petioles of scale-leaves with an aborted lamina. A similar association of two forms of leaf is seen in the existing American species Osmunda Claytoniana and O.cinnamomea. The cortex and armour of leaf-bases are penetrated by numerous diarch roots. The xylem cylinder, six to seven tracheae broad, is characterised by the narrower diameter of its innermost ele- ments and—an important point—by the fact that the detachment of a leaf-trace does not break the continuity of the xylem cylinder (fig Stock Photo](https://c8.alamy.com/comp/PG15G7/fossil-plants-for-students-of-botany-and-geology-paleobotany-xxl-osmundaceae-333-petioles-and-the-petioles-of-scale-leaves-with-an-aborted-lamina-a-similar-association-of-two-forms-of-leaf-is-seen-in-the-existing-american-species-osmunda-claytoniana-and-ocinnamomea-the-cortex-and-armour-of-leaf-bases-are-penetrated-by-numerous-diarch-roots-the-xylem-cylinder-six-to-seven-tracheae-broad-is-characterised-by-the-narrower-diameter-of-its-innermost-ele-ments-andan-important-pointby-the-fact-that-the-detachment-of-a-leaf-trace-does-not-break-the-continuity-of-the-xylem-cylinder-fig-PG15G7.jpg ". Fossil plants : for students of botany and geology . Paleobotany. XXl] OSMUNDACEAE 333 petioles and the petioles of scale-leaves with an aborted lamina. A similar association of two forms of leaf is seen in the existing American species Osmunda Claytoniana and O.cinnamomea. The cortex and armour of leaf-bases are penetrated by numerous diarch roots. The xylem cylinder, six to seven tracheae broad, is characterised by the narrower diameter of its innermost ele- ments and—an important point—by the fact that the detachment of a leaf-trace does not break the continuity of the xylem cylinder (fig Stock Photo")
RMPG15G7–. Fossil plants : for students of botany and geology . Paleobotany. XXl] OSMUNDACEAE 333 petioles and the petioles of scale-leaves with an aborted lamina. A similar association of two forms of leaf is seen in the existing American species Osmunda Claytoniana and O.cinnamomea. The cortex and armour of leaf-bases are penetrated by numerous diarch roots. The xylem cylinder, six to seven tracheae broad, is characterised by the narrower diameter of its innermost ele- ments and—an important point—by the fact that the detachment of a leaf-trace does not break the continuity of the xylem cylinder (fig
RMRE36YY–. Fundamentals of botany. Botany. 152 STRUCTURE AND LIFE HISTORIES 142. Two Kinds of Fern-leaves.—Careful examination of the leaves of some mature ferns will disclose the fact that they are not all alike. Some of them are merely foliage-leaves, and do not differ in any essential point from. Fig. III.—Osmunda Claytoniana. Young sporophylls, showing circinate vernation. Note the spore-bearing pinnas. the foliage-leaves of higher plants, such as the maple or lily; they possess stomata (Fig. no), and also resemble the leaves of higher plants in their internal structure. All fern-leaves, however, h
RMPG0CGT–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. Fig. ipt.—Osmunda Claytoniana, A, Ungerminated spore; i, ventral surface; z, optical section, X550; B, germinating spores, X275; r, primary rhizoid; C-E, older stages, X275; sp, spore membrane; x, apical cell. from the large prothallial cell (Fig. 191, B). The young rhi- zoid contains chlorophyll, but not so much as the larger cell. As germination proceeds the chloroplasts separate and increase in size. They are often arranged in lines extending from the large nucleus to the periphery of the c
RMRE36XH–. Fundamentals of botany. Botany. i6o STEUCTUB-E AND LIFE HISTORIES. Fig. 120.—Clayton's fern {Osmunda Claytoniana), showing sporophylls in the center, surrounded by foliage leaves.. 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.. Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
RMPG0CGK–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 348 MOSSES AND FERNS CHAP. the growth of the prothallium is exactly opposite to that of the first rhizoid (bi-polar germination), and Kny ((5)» P- ^^) lays a good deal of stress upon this, as distinguishing Osmunda from the Polypodiacese; but it is not at all uncommon for O. Claytoniana, especially, to have the axis of growth of the rhi- zoid almost or quite at right angles to that of the prothallium, exactly as in the Polypodiacese. Where the germination is truly bi-polar the exospore is push
![. Fossil plants : for students of botany and geology . Paleobotany. XXl] OSMUNDACEAE 333 petioles and the petioles of scale-leaves with an aborted lamina. A similar association of two forms of leaf is seen in the existing American species Osmunda Claytoniana and O.cinnamomea. The cortex and armour of leaf-bases are penetrated by numerous diarch roots. The xylem cylinder, six to seven tracheae broad, is characterised by the narrower diameter of its innermost ele- ments and—an important point—by the fact that the detachment of a leaf-trace does not break the continuity of the xylem cylinder (fig Stock Photo](https://c8.alamy.com/comp/RDBBE4/fossil-plants-for-students-of-botany-and-geology-paleobotany-xxl-osmundaceae-333-petioles-and-the-petioles-of-scale-leaves-with-an-aborted-lamina-a-similar-association-of-two-forms-of-leaf-is-seen-in-the-existing-american-species-osmunda-claytoniana-and-ocinnamomea-the-cortex-and-armour-of-leaf-bases-are-penetrated-by-numerous-diarch-roots-the-xylem-cylinder-six-to-seven-tracheae-broad-is-characterised-by-the-narrower-diameter-of-its-innermost-ele-ments-andan-important-pointby-the-fact-that-the-detachment-of-a-leaf-trace-does-not-break-the-continuity-of-the-xylem-cylinder-fig-RDBBE4.jpg ". Fossil plants : for students of botany and geology . Paleobotany. XXl] OSMUNDACEAE 333 petioles and the petioles of scale-leaves with an aborted lamina. A similar association of two forms of leaf is seen in the existing American species Osmunda Claytoniana and O.cinnamomea. The cortex and armour of leaf-bases are penetrated by numerous diarch roots. The xylem cylinder, six to seven tracheae broad, is characterised by the narrower diameter of its innermost ele- ments and—an important point—by the fact that the detachment of a leaf-trace does not break the continuity of the xylem cylinder (fig Stock Photo")
RMRDBBE4–. Fossil plants : for students of botany and geology . Paleobotany. XXl] OSMUNDACEAE 333 petioles and the petioles of scale-leaves with an aborted lamina. A similar association of two forms of leaf is seen in the existing American species Osmunda Claytoniana and O.cinnamomea. The cortex and armour of leaf-bases are penetrated by numerous diarch roots. The xylem cylinder, six to seven tracheae broad, is characterised by the narrower diameter of its innermost ele- ments and—an important point—by the fact that the detachment of a leaf-trace does not break the continuity of the xylem cylinder (fig
RMRE36GH–. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. Plant anatomy. Fig. 124.—A, B, C, D, Successive stages of growth of prothallium from the spore in Osmunda cinnamomea; E, growth of fern plant from fertilized egg within the prothallium of Osmunda Claytoniana. (After Campbell.) the resting nucleus of the spore mother cell, (f) When this mother-cell nucleus begins division the split chromosomes appear again as such, and in the anaphase their halves are sundered and removed to opposite poles where the spores are now formed, two for
![. Practical botany. Botany. ^-23. Tig. 239. At the left is the " interrupted fern,'' or Clayton's fern (Osmunda Claytoniana), in which sporangimn-bearing leaflets (sp) are distinct and inter- mediate with foliage leaflets. At the right is the royal fern {Osmunda regalis) A, a leaf with sporangium-bearing leaflets at its tip. B, C, B, stages in the devel- opment of sporangium-bearing leaflets from foliage leaflets. Both about one third natural size 287. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an Stock Photo](https://c8.alamy.com/comp/RE3AP2/practical-botany-botany-23-tig-239-at-the-left-is-the-quot-interrupted-fern-or-claytons-fern-osmunda-claytoniana-in-which-sporangimn-bearing-leaflets-sp-are-distinct-and-inter-mediate-with-foliage-leaflets-at-the-right-is-the-royal-fern-osmunda-regalis-a-a-leaf-with-sporangium-bearing-leaflets-at-its-tip-b-c-b-stages-in-the-devel-opment-of-sporangium-bearing-leaflets-from-foliage-leaflets-both-about-one-third-natural-size-287-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-an-RE3AP2.jpg ". Practical botany. Botany. ^-23. Tig. 239. At the left is the " interrupted fern,'' or Clayton's fern (Osmunda Claytoniana), in which sporangimn-bearing leaflets (sp) are distinct and inter- mediate with foliage leaflets. At the right is the royal fern {Osmunda regalis) A, a leaf with sporangium-bearing leaflets at its tip. B, C, B, stages in the devel- opment of sporangium-bearing leaflets from foliage leaflets. Both about one third natural size 287. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an Stock Photo")
RMRE3AP2–. Practical botany. Botany. ^-23. Tig. 239. At the left is the " interrupted fern,'' or Clayton's fern (Osmunda Claytoniana), in which sporangimn-bearing leaflets (sp) are distinct and inter- mediate with foliage leaflets. At the right is the royal fern {Osmunda regalis) A, a leaf with sporangium-bearing leaflets at its tip. B, C, B, stages in the devel- opment of sporangium-bearing leaflets from foliage leaflets. Both about one third natural size 287. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
RMRDFC0H–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. Fig. ipt.—Osmunda Claytoniana, A, Ungerminated spore; i, ventral surface; z, optical section, X550; B, germinating spores, X275; r, primary rhizoid; C-E, older stages, X275; sp, spore membrane; x, apical cell. from the large prothallial cell (Fig. 191, B). The young rhi- zoid contains chlorophyll, but not so much as the larger cell. As germination proceeds the chloroplasts separate and increase in size. They are often arranged in lines extending from the large nucleus to the periphery of the c
RMRDFC05–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 348 MOSSES AND FERNS CHAP. the growth of the prothallium is exactly opposite to that of the first rhizoid (bi-polar germination), and Kny ((5)» P- ^^) lays a good deal of stress upon this, as distinguishing Osmunda from the Polypodiacese; but it is not at all uncommon for O. Claytoniana, especially, to have the axis of growth of the rhi- zoid almost or quite at right angles to that of the prothallium, exactly as in the Polypodiacese. Where the germination is truly bi-polar the exospore is push
RMRDX4FC–. Plant culture; a working handbook of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse. Gardening; Greenhouses. 388 PLANT CULTURE Osmunda cinnamomea (Cinnamon Fern): Moist, rich. 0. Claytoniana (Interrupted Fern): Move while dormant. 0. regalis. Peaty; branching; edges of brooks. Polypodium vulgare (Common polypody): Can be planted upon the ledges of gorges. Greenhouse Ferns and Lycopods ADIANTUM (Maidenhair) is one of the most important genera of ferns, as it contains several of our most popular decorative plants. There are nearly a hundred kno
RMRDG1MR–. Heredity and evolution in plants. Heredity; Plants. LIPE HISTORY OF A FERN 13. Fig. 15.—Clayton's fern {Osmunda Claytoniana), showing sporophylls in the center, surrounded by foliage leaves.. 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.. Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's Son & Co.
RMRDYHBM–. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. Fig. Ids.—.1. part of stem of Gleichenia flabellata ; B, stem of Adiantvm palatum ; C, rhizome ofPti ris aquilina ; D, young stem of same ; E, stem of Selaginella tat mgata ; F. central cylinder of Osmunda Claytoniana.. 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.. Coulter, John Merle, 1851-1928; Chamberlain, Charles Joseph
Search Results for Osmunda claytoniana Black & White Stock Photos and Images (24)
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