Principia botanica: or, a concise and easy introduction to the sexual botany of Linnaeus ... / [Anon.] Arranged in columns under each class and order; and digested alphabetically under several generie distinctions. By which means most plants may be thus far ascertained. Together with three indexes ... Also a table of several vegetable drugs not in the indexes.
- Robert Darwin
- Date:
- 1787
Licence: Public Domain Mark
Credit: Principia botanica: or, a concise and easy introduction to the sexual botany of Linnaeus ... / [Anon.] Arranged in columns under each class and order; and digested alphabetically under several generie distinctions. By which means most plants may be thus far ascertained. Together with three indexes ... Also a table of several vegetable drugs not in the indexes. Source: Wellcome Collection.
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![< l »49 ] I XXIV. CRYPTOGAM I A.* {Clan edine marriages.) •* • - - - • * , This clafs consists of such, genera in which the par's of fructification, either from their minutenels. or parti- cular situation, are imperfetlly visible, or entirely con- cealed. This clafs contains four orders. Order I. FIL.ICE S. [Ferns.) Containing such plants as bear their fruit on spikes, or in spots or lines on the under surface of the leaves, though sometimes at the root.—It admits of the follow- ing chara6ter. The calyx, a scale growing out of the leaf, opening on one side, under which are peduncu- late globules, each encompafsed by an elastic ring, which breaking with violence, scatters a powder. But as there are no certain distin&ions in thz fructification sufficient to establish the genera, Linnaeus hath ar- ranged them thereof. according to the form and i ’ ' situation no. genera. growth. no. of r , •' native of species. J species in Brit. . ist. Frunifications spiked. 1 Cycas, s l India. 2 Equisetum, h 7 Europe. Brit. 6 q Onoclea, h 2 Virginia. 4 Ophioglofsum, h 9 America. Brit, i 5 Osmunda, h 17 Cape. Ceylon. Brit. 4 6 Zamia, s q America. 2d. FruFli- * The plants of this clafs are often of dangerous quality.](https://iiif.wellcomecollection.org/image/b28764754_0163.jp2/full/800%2C/0/default.jpg)
