14 ; SYNOPSIS OF NATURAL ORDERS. 
B. SPORE-BEARING PLANTS or CRYPTOGAMS. 
Plants bearing no real flowers,—that is, neither stamens, nor 
pistils, nor true seeds ; the fructification consisting of minute, often 
microscopic cells, ¢; alled spores, variously enclosed in spore-cases. 
A few tree-ferns are the aly trees in this class. 
1. — with both cellular and vascular tissue. Antheridia, 
rchegonia, or both, formed on a prothallus that is developed from 
the spore on its germination. 
— Fructification of very minute capsules (s —~ full of micro- 
scopic — situated on the under = a or ages margins of the — 
frond, ©: separate branches of the frond; — = larger capsules — 
aoe ae smo or ne confluent on the under wt of the frond or 
imple or branched spikes. Terrestrial, very rarely marsh- 
niin icinaktiads furnished with a short trunk, or trees. Vernation 
ually circinnate. 
