. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada. Botany; Botany; Botany. Order 160.—F1L1CES. 815 Order CLX. FILICES. Ferks. Stem a perennial, creeping, horizontal rhizome, or sometimes erect and arbores- cent Fronds (fruit-bearing leaves) va- riously divided, rarely entire, with forked veins, and mostly circinate vernation. Fructification occupying the back or mar- gin of tho fronds, arising from the veins. Sporangia (spore-cases) of one kind, scat- tered or clustered in son, 1-celled, con- taining
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada. Botany; Botany; Botany. Order 160.—F1L1CES. 815 Order CLX. FILICES. Ferks. Stem a perennial, creeping, horizontal rhizome, or sometimes erect and arbores- cent Fronds (fruit-bearing leaves) va- riously divided, rarely entire, with forked veins, and mostly circinate vernation. Fructification occupying the back or mar- gin of tho fronds, arising from the veins. Sporangia (spore-cases) of one kind, scat- tered or clustered in son, 1-celled, con- taining numerous, minute sporei An- tlieridia and pistillidia formed after ger- mination, on tho young plant (See figs. 491—501.) Genera 200, specie* 2000.—A large and in- teresting; order of flowerleas plants, distin- guished for their elegant, plume-like foliage. They are usually a few inches to a few feet high, but some of the tropical species, as the Cyuthea? of both Indies, are 15—25 feet high, vicing with the palms in size and beauty. Properties. — Generally mucilaginous and mildly astringent, bi nee considered pectoral. A> ikiium and I'teris nro anthelmintic, (te- la has been successfully adminis- Ured for the rickets. Observation.—The fructification of the ferns, with its various appendages, is too minute to be well observed by the naked eye ; but an examination of it with the aid of a KX cannot fail to be interesting and 739 rolypodium vulgarc. W0 Frond. 741 Lobo of the frond enlarged, showing the sori. 742 One of the sori enlarged, showing the spor- 743 Ono sporange further magnified, bursting and discharging the spores. 744 Sorua ium marginale covered with the siuux. 745 Same, side view. SUBORDERS AND GEJTERA. § Frond caniinc, solitary, straight in vernation. Btem erect (a) 5 Fronds caulinc. several, palmato (or radical and filiform), (b) $ Fronds all radical, clustered (never filiform), circinate in vernation. (2) 2 Bpoi I or panicled,
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectbotany, bookyear1861
