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Onoclea sensibilis Stock Photos and Images

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Onoclea sensibilis Stock Photos and Images

. The structure and development of mosses and ferns (Archegoniatae). --sp. Fig. 177.—A, Osmunda cinnamomea, section of a recently fertilised archegonium,X4S0. A spermatozoid has penetrated the nucleus of the egg, and several arein the space above the egg. B, Onoclea sensibilis. Egg fourteen hours after thepenetration of the spermatozoid, which is still recognizable within the egg nucleus,X900. (B, after Shaw.) gonium opens, the egg is depressed above, and the nucleusflattened. As soon as the archegonium opens, and the dis-organised contents of the neck cells are expelled, the tggbecomes turgid Stock Photo
RM2AFHXR4–. The structure and development of mosses and ferns (Archegoniatae). --sp. Fig. 177.—A, Osmunda cinnamomea, section of a recently fertilised archegonium,X4S0. A spermatozoid has penetrated the nucleus of the egg, and several arein the space above the egg. B, Onoclea sensibilis. Egg fourteen hours after thepenetration of the spermatozoid, which is still recognizable within the egg nucleus,X900. (B, after Shaw.) gonium opens, the egg is depressed above, and the nucleusflattened. As soon as the archegonium opens, and the dis-organised contents of the neck cells are expelled, the tggbecomes turgid
Elementary botany . Rhizome of sensitive fern (Onoclea sensibilis). of cells. Two of the longer ones resemble the lips of some crea-ture, and since the sporangium opens between them they aresometimes termed the lip cells. These lip cells are connected withthe upper end of the annulus on oneside and with the upper end of the stalkon the other side by thin-walled cells,which may be termed connective cells,since they hold each lip cell to its partof the opening sporangium. The cellson the side of the sporangium are alsothin-walled. If we now examine asporangium from the back, or dorsalUnder side Stock Photo
RM2AJCMC2–Elementary botany . Rhizome of sensitive fern (Onoclea sensibilis). of cells. Two of the longer ones resemble the lips of some crea-ture, and since the sporangium opens between them they aresometimes termed the lip cells. These lip cells are connected withthe upper end of the annulus on oneside and with the upper end of the stalkon the other side by thin-walled cells,which may be termed connective cells,since they hold each lip cell to its partof the opening sporangium. The cellson the side of the sporangium are alsothin-walled. If we now examine asporangium from the back, or dorsalUnder side
Elementary botany . 254 MORPHOLOG V. is termed the annu/us, which means a little ring. .While thisis not a complete ring, in some other ferns the ring is nearlycomplete. 534. In the front of the sporangium is another peculiar group. Rhizome of sensitive fern (Onoclea sensibilis). of cells. Two of the longer ones resemble the lips of some crea-ture, and since the sporangium opens between them they aresometimes termed the lip cells. These lip cells are connected withthe upper end of the annulus on oneside and with the upper end of the stalkon the other side by thin-walled cells,which may be term Stock Photo
RM2AJCMHC–Elementary botany . 254 MORPHOLOG V. is termed the annu/us, which means a little ring. .While thisis not a complete ring, in some other ferns the ring is nearlycomplete. 534. In the front of the sporangium is another peculiar group. Rhizome of sensitive fern (Onoclea sensibilis). of cells. Two of the longer ones resemble the lips of some crea-ture, and since the sporangium opens between them they aresometimes termed the lip cells. These lip cells are connected withthe upper end of the annulus on oneside and with the upper end of the stalkon the other side by thin-walled cells,which may be term
. British ferns and their varieties. POLYPODIUM VULGARE, Var, PULCHERRIMUM 364 BRITISH FERNS LI POLYPODIUM VULGARE, V(ir. DENTATUM (Moore) Mr. J. M. Barnes. Westmoreland. 1865.1 ft. A deltoid form—rather suggestive of Onoclea sensibilis.. LI POLYPODIUM VULGARE, Var. DENTATUM 366 BRITISH FERNS LII POLYPODIUM VULGARE, var. SEMILACERUM {Link) The late Mrs. Delves, Tunbridge Wells. Co. Wicklow. 1850. 1 ft. 1 in.Syn. Hibernicum. By Mr. Wollaston. The forms of Polypodium vulgare seini-lacernm may fairly be considered analogous to the decompositumforms of Polystichum angulare, and in either case the Stock Photo
RM2AGBPJM–. British ferns and their varieties. POLYPODIUM VULGARE, Var, PULCHERRIMUM 364 BRITISH FERNS LI POLYPODIUM VULGARE, V(ir. DENTATUM (Moore) Mr. J. M. Barnes. Westmoreland. 1865.1 ft. A deltoid form—rather suggestive of Onoclea sensibilis.. LI POLYPODIUM VULGARE, Var. DENTATUM 366 BRITISH FERNS LII POLYPODIUM VULGARE, var. SEMILACERUM {Link) The late Mrs. Delves, Tunbridge Wells. Co. Wicklow. 1850. 1 ft. 1 in.Syn. Hibernicum. By Mr. Wollaston. The forms of Polypodium vulgare seini-lacernm may fairly be considered analogous to the decompositumforms of Polystichum angulare, and in either case the
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