April, 1909.] 
The Classification of Plants, V. 
493 
nonsexual zoospores, the sexual forms having true isogamous or 
heterogamous gametes. 
Pleurococceae. 
Archimycetae. 
Protococceae. 
Hydrodictyeae. 
Monoblepharideae. 
Siphoneae. 
Conferveae. 
6. Phaeophyta. Brown Algae. 1,000 species. 
Mostly marine algae with chlorophyll and phycophaein and 
with gametes, both isogamous and heterogamous, which are all 
discharged from the gametangia. 
Phaeosporeae. 
Cyclosporeae. 
Dictyoteae. 
7. Rhodophyta. Red Algae, 2,000 species. 
Mostly marine algae with chlorophyll and phvcoervthrin, 
having nonciliated sperms and stationary eggs. 
Bangieae. 
Florideae. 
8. Chareae. Stoneworts. 100 species. 
Filamentous, aquatic, green algae with globular antheridia 
containing sperm-bearing filaments, the sperms being biciliate; 
nonsexual spores absent. 
Chareae. 
9. Mycophyta. 47,000 species. 
Plants with a septate or nonseptate mycelium, destitute of 
chlorophyll, with or without sexuality but never with typical 
gametes. 
Zvgomycetae. 
Oomycetae. 
Ascomvcetae. 
Laboulbenieae, 500 species. 
Teliosporeae. 
Basidiomvcetae. 
10. Bryophyta. 17,000 species. 
Nonvascular plants with a definite alternation of generations, 
the egg produced in an archegonium, and the sporophvte per¬ 
manently parasitic on the gametophvte. 
Hepaticae. 
Sphagneae. 
Andreaeae. 
Musci. 
Anthocerotes. 
