CKTPTOGAME^. xlv 



Class III. CRYPTOGAME^. 



* Vasculares. Steins with a few ducts amongst the 

 cellular tissue. Producing spores which develop 

 into a prothallus which hears antheridia and arche- 

 gonia. 



99. Equisetacece. Capsules on the under side of the 

 peltate scales of terminal cones. Stems jointed, with 

 whorled branches. — Horse-tails 448 



100. Filices. Capsules on the edge or underside of 

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

 usually circinate 451 



101. Marsileacecs. Capsules in the cells of globular 

 coriaceous sessile or shortly stalked axillary receptacles . . 465 



102. Lycopodiacece. Capsules in the axils of imbricate 

 leaves or terminal spikes, 2 — 3-valved 465 



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

 ciUately branched. Nucules and globules on the 

 branches. 



103. Characeee. Leafless, branched. Fructification of 

 red globules and ovoid nucules with a spirally twisted 

 coat, on the same or different plants 468 



