60 i SPH.EROCOCCOIDE.E. Grneilaria. 



larius et parce dichotoma, margine pinnis parcioribus el apice denticulis 

 panels obtusioribus obsita. Habitus eximie Lichenoideus. Haec forma a 

 Kiitzingio nomine Sph. cervicornis Phyc. gen. lab. 62 // depicla, dein ut 

 nova sp. Sph. rangiferini nomine in Sp. Alg. divulgata. Pra?terea ad hanc 

 forsan pertinent Fucus denticulatus Vahl Naturh. Scellsk. Skr. V. 2 p. 45 

 et Gelid? denticulatum Kutz,. sp. p. 769. 



23. GR. CERYICORNIS (Turn. Hist, tab, 121) fronde mernbranacco- 

 cartilaginea subplana pinnatim dccomposita, pinnis linearibus 

 dentulis, ultimis srepe siibiilifonnibus, dentibus aculissimis, coc- 

 cidiis hemisphaericis apiculatis in disco segmentorimi supoi iorura 

 submarginalibus. 



Fucus cervicornis Turn. I. c.H 



Spha?rococcus cervicornis Ag. sp. p. 292. Syst. p. 229! Kutz. Sp. Alg. 

 p. 773! 



Rhodymenia cervicornis Mont. Voy. Bonile p. 408. 



Spha?rococcus ramulosus Mart. Icon. Set. tab. 3 fig. 2 Mont. Ft. 

 Boliv. p. 31. 



Gracilaria ramulosa Grev. in Aug. iSl. Hit. Voy. If. 448. 



Sphaerococcus Gnudicliaiulii Bory partim? 



Sphaprococcus acantliophorus Kulz. Sp. Alg. p. 778? 



Hab. in oceano atlantioo calidiori ad littora Mexicana (Liebraan!) 

 Jamaica 1 (Hb. Tumor!), Cubne (Hb. Crouan!), Martinique (Duperrey!) 

 St. Croix (Tostman!), Brasilia (Merkcll Lund! Salzman!) usque ad 

 Rio Janeiro (lib. Monta^ne! ct Hinder!). 



Frons semipedalis et ultra, pinnatim decomposita, pinnis ultimis ali- 

 quando subdichotomis. Pinna? lineares, inferiores lineam latae, supremse 

 saape plus triplo angustiores', frons plana cum a?tate crassior cvadit, quare 

 pinna?- ultima?, ob angustiam fere teretiuscula? apparent. Denies acutissimi 

 plerumque subulali, in margine plus minus densi. Coccidia in segmentis 

 angustioribus tantum obvenientia, submarginalia, attamen in disco sessilia, 

 hemispha?rica et apiculala. Color purpurascens; in adulta, facile decolo- 

 rala, albescens. Subslantia demum firma carlilaginea. Spha^rospora? 

 generis. 



In Hb. Ag. adest specimen, ad Kamtscbatka a Chamisso lectum, quod 

 a Gr. cervicorni distinguere non valeo. Habilus idem, slruclura et spha?- 

 rospora? generis. An locus natalis Kamtscbatka? huic errore adscriptus 

 sit, dubilo. 



Species inquirendw. 



2i. (in. DACTYLOIDES (Sond. in Mohl. et Schl. Bot. 'Le.it. 1845 p. 

 55) fronde fluccida tereli bis terve dichotoma, ramulis obsita 



