I 



17!J8 Eu-Floridese, Corallinaceae, Goniolithon. 



cum tegmine filis tenuibiis ScT.pe maturitate evanescentibus conjun- 

 cto. Conceptacula carposporifera superficialia, conica, apice ssepe 

 producta, poro apicali crassiusculo donata. 



Obs. Duo subgenera distinguere conatus est clarus Foslie, qu^e 

 sunt: 



Subgen. I. Cladolithon Fosl. New Melobesieae (1900) p 14: Thallus ramosus. 

 Conceptacula sporangifera plerumque superficialia, apioe prolongato breviu- 

 sculo instructa. 



Suhgen. II. Herpolithon Fosl. New Melobesieae (1900) p. 18: Thallus crustee- 

 formis. Conceptacula sporangifera subimmersa, apice prolongato donata aut 

 versus medium constricta, parte superiori demum saepe dendua. 



1. Goniolithon Brassica-florida (Harv.) Fosl. List (1898) p. 9, Rev. 2927 

 Syst. Surv. of Melob. (1900) p. 16, Lithothamnwn Brassica-flo- 

 rida Aresch. in J. Ag. Sp. II, p. 523, Melohesia Brassica-florida 

 Harv. Ner. austr. p. 110. — Fronde lapidescente, ponderosa, glo- 

 bosa, e centro undique ramosissima, ramis basi anastomosantibus 

 apice multifidis corymboso-fasciculatis fastigiatis, apicibus mamil- 

 l;<?formibus. 



Hah. in sinu «Algoa» Africae (Harvey). — Frons globosa, 4- 

 7 cin. diametro aequans, e centro ramosa et cymam Brassicie flo- 

 rida^ eximie referens. — forma laccadivica Fosl. Lith. of Makl. 

 and Laccad. p. 469, t. XXV, f. 7, Goniolithon laccadivicum Fosl. 

 Siboga Exped. LXI: crustis 0,5-1,5 mm. crassis, ramis brevibus 

 simplicibus sparseve divisis, 2-2,5 mm. crassis; conceptaculis spo- 

 rangiferis conicis, 800-900 [x. diam. metientibus. In Coralliis ad 

 insulas Laccadivicas (Stanley Gardiner). — Sporangia zonatim 

 divisa, 120-160 « 45-55 [j. Heterocystae paucie. 



2. Goniolithon mamillosum (Hauck) Fosl. Rev. Syst. Surv. of Melob. ^928 

 (1900) p. 16, Lithothamnion mamillosum Hauck Meeresalgen 

 p. 273, f. III, f. 3 et t. V, 1, Lithothamnion HaucMi Rothpl. — 

 Crustis crassissimis, plerumque irregulariter globosis, superficie 

 in tuberculos ramosos, concrescentes porrecta; conceptaculis nu- 

 merosis, sparsis vel passim aggregatis, subhemisphaericis, sa^pe 

 longe apiculatis. 



Hab. lapidibus insidens, nunc solutum, ad oras orientales maris 

 Adriatici (Hauck). — Conceptacula 1 millim. et ultra diam. me- 

 tientia. An prcT.cedentis varietas? 



3. Goniolithon mamillare (Harv.) Fosl. List (1898) p. 9, Rev. Syst. Surv. 2929 



