Ixii CLASSES, DITISIONS, AND OUDEES. 



Class III. CRYPTOGAME^. 



* Vasculares. Stems with a few ducts amonp;st the 

 cellular tissue. Producing spores which develop 

 into a prothallus which bears antheridia and arche- 

 gonia, 



99. JEqui&dace(e. Capsules on the under side of the 

 peltate scales of terminal cones. Stems jointed, with 

 whorled branches. — Horse-tails 438 



100. Filices. Capsules on the edge or underside of 

 fronds, or rarely on separate branch of frond. — Fronds 

 usually circinate 441 



101. Marsileacece. Capsules in the cells of globular 

 coriaceous sessile or shortly stalked axillary receptacles . . 455 



102. Lycopodiace<B. Capsules in the axils of imbricate 

 leaves or terminal spikes, 2 — 3-valved 4.5.5 



** Stems formed of one or more parallel tubes, verti- 

 cillately branched. Nucules and globules on the 

 branches. 



103. Characece. Leafless, branched. Fructification of 

 red globules and oval nucules with a, spirally twisted 

 coat on the same or different plants 4.58 



