336 THE PLANT PH\TA 



Order Entomophthorales. Xon-aquatic; mostly para- 

 sitic in insects; without zoospores. 



Family 17. Entomophthoraccae. Fly Fungi. — Ento- 

 mophthora. 

 Class 9. BRYOPSIDOIDEAE. Higher Tube Algae. Globu- 

 lar to stipitate or dendroid, septate or 

 continuous. (Sp. about 4G0.) 

 Order Valoniales. Globular coenocytes to compound 

 septate plants. Isogamic. 



Family 18. Botrydiaceae. Little Bladder Algae. 

 Minute, globular, terrestrial green 

 plants. — Botrydium, Protosiphon. 



Family 19. Chytridiaceae. Minute, globular, endo- 

 phytic, colorless plants. — Chytri- 

 dium. 



Family 20. Valoniaceae. Large Bladder Algae. Large, 

 usually septate, marine plants. — 

 Valonia, Struvea, Halicystis. 

 Order Dasycladales. Regularly branched, non-septate, 

 marine plants. IMostly isogamic. 



Family 21. Derbesiaceae. 



Family 22. Bryopsidaceae. Sea Ferns. Dendroid, 

 erect, pinnately branched. — Bryopsis. 



Family 23. Caulerpaceae. 



Family 24. Dasycladaceae. Erect with whorled 

 branches. — Dasycladus, Acetabularia. 

 Order Charales. The Stoneworts. Erect, rooted, sep- 

 tate, dendroid, with whorled branches, 

 heterogamic, antherids compound. 

 (Sp. about 160.) 



Family 25. Nitellaceae. Oogone crown of ten cells. — 

 Nitella, Tolypella. 



Family 26. Characeae. Oogone crown of five cells. — 

 Chara, Lamprothamnus. 



Phylum V. PHAEOPHYCEAE. The Brown Algae 



Brown-green filamentous to large, massive plants, marine 



Class 10. PHAEOSPOREAE. Kelps. Reproductive organs 

 external, isogamic to heterogamic. 

 (Sp. about 550.) 



