A Synopsis of Plant Phvla 19 



its nearby auxiliary cell ; the latter then gives rise to the sporo- 

 phores which grow outward in the plant body. 



Family 12. Sphaerococcaceae. Plants not foliaceous, much 

 branched, often robust and of dense texture. Gracilaiia, Hypnea. 

 (Pf. I, 2, 382.) 



Family 13. Rhodymeniaceae. Plants from filiform to cylin- 

 drical-branched, flattened, and foliaceous. Rhodyincnia, Cham- 

 pia, Plocaniiuni. (Pf. I, 2, 396.) 



Family 14. Delessariaceae. Plants foliaceous, often with mid- 

 ribs, and regular netted patterns. Here are some of the most 

 beautiful of the red seaweeds. Nitophylluni^ Crinnellia^ Deles- 

 saria. (Pf. I, 2, 406.) 



Family 15. Bonnemaisoniaceae. Plants consisting of long, 

 slender main stems covered with filamentous branches. Bonne- 

 maisonia. (Pf. I, 2, 417.) 



Family 16. Rhodomelaceae. Plants cylindrical or flattened, 

 mostly much branched, often foliaceous; structure mostly paren- 

 chymatous and polysiphonous. Poh'siphonia, Rhodomcla, Dasya. 

 (Pf. I, 2, 421.) 



Family 17. Ceramiaceae. Plants filiform, sometimes corti- 

 cated, mostly laterally branched, complanate. Lcjolisia, Calli- 

 thamnion, Ptilota, Ceramium. (Pf. I, 2, 481.) 



Order Cryptonemiales. Oogones and auxiliary cells sepa- 

 rated; the fertilized egg conjugates with the remote auxiliary cell 

 by means of its long branching filament ("ooblastema") ; the aux- 

 iliary cell then gives rise to the sporophores. 



Family 18. Gloiosiphoniaceae. Plants terete or complanate, 

 forked or laterally branched, more or less filamentous internally. 

 Gloiosiphonia, GloiopcUis. (Pf. I, 2, 505.) 



Family 19. Grateloupiaceae. Plants terete or angled, com- 

 planate or foliaceous, variously forked, or more commonly later- 

 ally branched, more or less filamentotis internally. Halymenia, 

 Grateloupia, Cryptonemia. (Pf. I, 2, 508.) 



Family 20. Dumontiaceae. Plants terete, complanate, or foli- 

 aceous, forked or laterally branched, more or less tubular inter- 

 nally. Dumontia, Diidrcsnaya. (Pf. I, 2, 515.) 



Family 21. Nemastomaceae. Plants terete, complanate, or fo- 



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