INTRODUCTION. 



LXXXIIL Amaryllideaj. Terrestial plants. Perianth of 6 division*. 

 Stamens 6. 



LXXXIV. Dioscorideae. Twining plants. Flowers unisexual Peri- 

 anth regular, of 6 divisions. 



** Perianth regular. Ovary syncarpous, mperior. 



LXXXV. Liliacese. Perianth petal-like. 



LXXXVI. Juncacese. Perianth stifif, or calyx-like. Capsule 3-celled, 

 with several seeds, or 1 erect seed in each cell. 



LXXXVII. Restiaceae. Perianth calyx-like. Flowers unisexual. 

 Ovary with 1 pendulous ovule in each cell. 



***** Perianth rudimentary or none, replaced by chaffy scalet or bractt 

 enclosing the flowers. 



LXXXVII I. Cyperaceae. Leaf-sheafs entire. Bach Bower in the 

 axil of one bract. 



LXXXIX. Gramineae. Leaf-sheaths split open opposite the blade. 

 Each flower enclosed in two bracts. 



CLASS III. VASCULAR CRYPTOGAMS. 



No true flowers ; that is, no stamens or pistils. 



XC. Lycopodiaceaa. Spores of one form only, in closed capsules, in 

 the axils of the leaves, or of the bracts of a terminal spike, or in the 

 base of the leaves. 



XCI. Selaginellaceae. Spores of two forms, in closed capsules in the 

 axils of the leaves, or of the bracts of a spike. 



XCII. Marsileaceae. Spores in minute cases enclosed in globular or 

 ovoid utricles (or involucres) placed on the rootstock. 



XCIII. Equisetaceae. Stems jointed, with whorled branches. Spores 

 under peltate scales, in terminal heads or spikes. 



XCIV. Filices. Spores in minute cases clustered on the back or 

 margin of the fronds. 



The remaining families of British Cryptogams [called cellular, from 

 having no vascular tissue (see p. xliL, par. 186)] are not included in the 

 present Flora. [They are the Charas, Mosses, Liverworts, Hepaticae, 

 Fungi, Lichens, and Alga;.] 



