. The elements of structural botany with special reference to the study of Canadian plants ... Plant physiology; Plant anatomy. EQUISETACE^. 267 til 3 plant, broadly triangular, variouslj- decompound, with stalked divisions. Fertile segment erect, 2-4-pinnate.âNot uncommoh. 18. OPIIlOGlOS'Siritl, L. Adder's Ton-gue. 0. VUlga'tum, L. sterile part ol' the frond ovate or elliptical-oblong, 2-3 inches long, rather fleshy, sessile, near the mid- dle of the stalk; the latter 6-12 inches high.âBogs and grassy meadows. Order CXni. EQUISETA'CEiE. (Horsetail Family.) ' The only genns of the Order ig EUI
. The elements of structural botany with special reference to the study of Canadian plants ... Plant physiology; Plant anatomy. EQUISETACE^. 267 til 3 plant, broadly triangular, variouslj- decompound, with stalked divisions. Fertile segment erect, 2-4-pinnate.âNot uncommoh. 18. OPIIlOGlOS'Siritl, L. Adder's Ton-gue. 0. VUlga'tum, L. sterile part ol' the frond ovate or elliptical-oblong, 2-3 inches long, rather fleshy, sessile, near the mid- dle of the stalk; the latter 6-12 inches high.âBogs and grassy meadows. Order CXni. EQUISETA'CEiE. (Horsetail Family.) ' The only genns of the Order ig EUI'ISE'THM, L. HOKSETAIL. SCOUK- iNG Rush. Fig. 272 is a view of the fertile stem of Equise'tum apvense, the Common Horsetail, of about the natural size. It may be observed early in spring almost anywhere in moist sandy or gravelly soil. It is of a pale brown colour, and in place of leaves there is at each joint a sheath split into several teeth. At the summit of the stem is a sort of conical catkin, made up of a large number of six-sided bodies, each attached to the stem by a short pedicel. Each of these six-sided bodies turns out on examination to be made up of six or seven sporangia or spore-cases, which open down their inner margins to discharge their spores. Figs. 273 and 274 are enlarged outer and inner views of one of them. The spores themselves are of a similar nature to those of =â -the Ferns, and reproduction is carried on in the ! manner ; but each spore of the Horsetail is furnished four minute tentacles which closely envelope it when. 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 Spotton, Henry Byron, 1844-. Toronto, W. J. Gage & Co
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Keywords: ., bookcentury1800, bookdecade1890, booksub, booksubjectplantanatomy
