. The vegetable kingdom : or, The structure, classification, and uses of plants, illustrated upon the natural system. biypbog^anify reproductive organs, and sometimes the place of spore-case is supplied by the depau-perated lobes of the leaves. The plants called Ferns are the most gigantic of Acrogens, sometunes haAong trunksforty feet high. They approach Flowering classes by Cycadacese, which may be consideredto have much affinity with them, on account of the imperfect degree in which the vas-cular system of that Order is developed, of their pinnate leaves vAth a gyrate vernation, Fig. LII.—T
. The vegetable kingdom : or, The structure, classification, and uses of plants, illustrated upon the natural system. biypbog^anify reproductive organs, and sometimes the place of spore-case is supplied by the depau-perated lobes of the leaves. The plants called Ferns are the most gigantic of Acrogens, sometunes haAong trunksforty feet high. They approach Flowering classes by Cycadacese, which may be consideredto have much affinity with them, on account of the imperfect degree in which the vas-cular system of that Order is developed, of their pinnate leaves vAth a gyrate vernation, Fig. LII.—Tree-Ferns, from Blume. ACROGENS.] FILICALES. 75 and their naked ovules borne upon the margm of contracted leaves, as the spore-cases ofFerns are upon the leaves of Osmunda. To Coniferous Gynniospemis they also advancevery closely through Sahsburia, whose leaves might be mistaken for those of a afiinity of Ferns with Equisetum, consists more in a want of flowers, and thepresence of annular vessels, than in any similarity of habit. Clubmosses are readilyknown by their axillary spore-cases dehiscing by r
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Keywords: ., bo, bookcentury1800, bookdecade1840, bookidvegetablekingdom00lind
