1216 Eu-Floridese, Dasyeae. Heterosipbonia. 



45. Dasya tenella Hering iti Ann. Nat. Hist. VIII, p. 90 est Polysi- 

 phonia Heringii Harv. 



46. Dasya pallida So-nd. Alg. Preiss. p. 32, Eupogonium? pallidum 

 Knetz. Sp. p. 799 est, saltem ex parte, Wrangelio? sp. 



47. Dasya crouanioides Sond. Pl. Mueller. p. 103, J. Ag. Sp. II, 3, 

 p. 1239 est Crouanice species. 



48. Dasya Lauterbachii Asken. et Schmidle in Flora 1897, pag. 324, 

 fig. D est Bostrychice species. 



49. Dasya sarcocaulon Harv. Phyc. Austral. tab. 237 est Bron- 

 gniartella. 



50. Dasya tenera Harv. Phyc. Austral. tab. 257 est Sarcomenia. 



51. Dasya velutina Sond. in Botan. Zeitung 1845, p. 53, Alg. Preiss. 

 p. 32, Harv. Nereis Austral. p. 63, t. 23, J. Ag. Sp. II, 3, p. 1227 

 (non J. Ag. Till Algern. Syst. XI, p. 99) est Wrangelia vetutina 

 Harv. 



HETEROSIPHONIA Mont. [1842] Prodr. Phyc. Antarct. pag. 4 (Etym. 

 heteros diversus etsiphon tubus), Schmitz Die Gattung Lophothalia 

 (1893) p. 226, Schmitz et Falkenb. in Engl. & Prantl Natiirl. Pflan- 

 zenfam. (1897) p. 472, Falkenb. Rhodomelaceen (1901) pag. 630, 

 Trichothamnion Kuetz. [1843] Phyc. gener. pag. 415, Sp. (1849) 

 pag. 800 pro maxima parte, Merenia Reinsch [1888] in Ber. d. 

 tleut. bot. Ges. VI, 4 saltem ex parte, Dasyoe sect. Heterosiphonia 

 J. Ag. [1863] Sp. II, 3, p. 1179, Dasycs, Confervce, Fuci, Calli- 

 thamnii, Polysiphonice, Rhodomelce, Ceramii, Hutchinsice, Aspe- 

 rocaulonis sp. auct. — Frons plerumque erecta, dorsiventraliter 

 constructa, caule saepius complanato, structurain cellulosam aut 

 celluloso-filamentosam prabens. Ramis primariis sympodice crescen- 

 t.ibus apices rectos aut incurvos monstrantibus, ad articulos quo- 

 sque 2, rarius 3-8-nos biseriatim e marginibus ramos secundarios 

 proferentibus. Cellulae pericentrales 4 aut 6 et ultra, nunc numero 

 sequales nunc versus apices decrescentes, plus minus cito extus 

 corticatse. Cystocarpia ovoidea aut urceolata, lateraliter in ramis 

 disposita, nunc basi lata insidentia, nunc pedicello suffulta. An- 

 theridia analogum locum tetrasporangiorum occupantia, plerum- 

 que elongata, pedicello polysiphonio donata. Stichidia in rainulis 

 junioribus definita, fere semper radiatim constructa, elongato-tere- 

 tia, pedicello polysiphonio (rarissime monosiphonio) fulta, plerum- 

 que tetrasporangia 4- aut 6-verticillata, matura extrorsum cellulis 

 tecta, foventia. 



