. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 317 tion is not often met with, owing to the fact that, like the sporo- phyte, its development is associated with mycorrhizal fungi and consequently it is usually completely buried in the soil and usually quite devoid of chlorophyll. The various stages in the germipa- tion of the spores have never been observed, but the mature gam- etophyte of Botrychium was found a few years ago by Jeffrey. Fig. 218. The gametophyte and young sporophyte of Botrychium: A, tuberous appearance of the gametophyte—e, a young sporophyte or em- bryo d
. Nature and development of plants. Botany. DEVELOPMENT OF PLANTS 317 tion is not often met with, owing to the fact that, like the sporo- phyte, its development is associated with mycorrhizal fungi and consequently it is usually completely buried in the soil and usually quite devoid of chlorophyll. The various stages in the germipa- tion of the spores have never been observed, but the mature gam- etophyte of Botrychium was found a few years ago by Jeffrey. Fig. 218. The gametophyte and young sporophyte of Botrychium: A, tuberous appearance of the gametophyte—e, a young sporophyte or em- bryo developing- in one of the archegonia. B, a section of gametophyte— ar, archegonia; an, antheridia. C, two antheridia in section. D, male gamete. E, archegonium before dissolution of canal cells. F, gametospore in two-cell stage of germination. G, young sporophyte with roots and first leaf developed but still attached by foot to the round gametophyte, gm- A. F.—After Jeffrey. and carefully studied. It appeared as a rather tuberous body that is provided with numerous rhizoids and a growing apical cell as "in the Bryophyta (Fig. 21?,, A, B). The archegonia and antheridia are usually borne upon the upper surface of the game-. 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 Curtis, Carlton Clarence, 1864-1945. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
