xlii 



LIST OF FAMILIES, GENERA, AND SPECIES, IN THE THREE COLOUR GROUPS, 



Family 15. — HELMINTHOCLADIEiE. — Gelatinous; cylindrical; Irancled. 



One fruit. Globular masses o/* spores 

 immersed. 



SciisrAiA;* furcellata. 

 NEMALEO]S";t multifidum. 

 Helminthora; divaricata. 

 Helminthocladia;:]: purpurea. 



Formerly Ginnania furcellata (Fig. 226). 

 t Formerly Dudresnaia divaricata (Fig. 221). 

 X Formerly Neyncdeon iJurpureum (Fig. 217). 



Family IQ.—RmmMmikGEM.— Delicately mernbranaceous ; flat; compres- 

 sed., or tJiread-sliaped. 



1. Masses of spores in external cases 

 (capsules), or half -immersed. 



2. Tetraspores variously dispersed. 



WoEMSKiOLDiA;* sanguinea. 

 Plocamium; coccineum. 

 Stenogeamme; interrupta. 

 KHODOPHYLLis;t bifida. 

 EuTHORA;;]: cristata. 

 Khodtmejs^ia; palraetta, palmata. 

 CoRT)TLECLADiA;§ erecta. 



* Formerly Delesseria sangulnea (Fig. 167). 

 f Formerly Rliodijmenia, bifida (Fig. 183). 

 X Formerly Rhodymenia cristata (Fig. 184). 

 § Formerly Gracilaria erecia (Fig. 163). 



Family 17.— SPYRIDIACEiE.— ^./# ; membranaceoics; tliread-Ulce ; fringed icitli 



jointed b?YmcJileteens. 



1. Spores iu exteimal, closed cases (capsules). 



2. Tetraspores, external. 



Spyeidta; filamentosa. 



Family 18.— CEYPTONEMIACEJ].— O/ every sort of substance and liahit. 



The internal structure consisting 

 ivholly., or in part o/' jointed threads, 

 compacted together by gelatine. Or 

 some of the membranaceous species 

 made up of many-sided cells similarly 

 compacted. 



1. Masses of spores in external cases 

 (capsules), with or ivithout an opening. 



2. Tetraspores chiefly immersed. 



PnTLLOPnORA; rubens, membranifolia, Brodisei, palmettoides. 

 Gtmnogongrus; G-riffithsise, Norvegicus.* 

 AHNEELDTiA;t plicata. 



* Formerly Ghondrus norvegicus (Fig. 203). 

 t Formerly Gymnogongrus plicaius (Fig. 211). 



