lxxx INTRODUCTION. 
~LXXXIV. Dioscorideze. Twining plants. Flowers unisexual. Perianth 
regular, of 6 divisions. : 
**** Perianth regular. Ovary syncarpous, superior. 
LX XXV. Liliaceze. Perianth petal-like. 
LXXXVI. Juncacez. Perianth stiff, or calyx-like. Capsule 3-celled, 
with several seeds, or one erect seed in each cell. | 
LXXXVII. Restiaceze. Perianth calyx-lke. Flowers unisexual. Ovary 
with one pendulous ovule in each cell. . 
EKER Perianth rudimentary or none, replaced by chaffy scales or bracts 
enclosing the flowers. 
LXXXVIII. Cyperaceze. Leaf-sheaths entire. Each flower in the axil 
of one bract. 
LXXXIX. Gramineze. Leaf-sheaths split open opposite the blade. Each 
flower enclosed in two bracts. 
CLASS III.—CRYPTOGAMS. 
No true flowers; that is, no stamens or pistils. 
XC. Lycopodiaceze. Spores of one form only, in closed capsules, in the 
axils of the leaves, or of the br acts of a terminal spike, or in the base of the 
leaves. 
XCI. Selaginellaceze. Spores of two fornis, in closed capsules in the axils 
of the leaves, or of the bracts of a spike. 
XCII. Marsileaceze. Spores in minute cases enclosed in globular or ovoid 
utricles (or involucres) placed on the rootstock. 
XCIII. Equisetaceze. 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 remainirg families of British Cr yptogams are not included in the 
present Flora. 
