Eu-Floridese, Polysiphoniege, Bryothamnion. 97B 



suhpinnatim ramosa ramulisque abbreviatis varie compositis 2-3- 

 4-fariam obsita, intra corticem polysiphonia, cellulis nempe 6-8 

 circa centralem in orbem dispositis aequilongis cellulisque exterio- 

 ribus brevioribus stratum corticale densum efficientibus contexta. 

 Cystocarpia adparenter in pedicello longiusculo acrogena, subglo- 

 bosa, iutra pericarpium cellulosum crassiusculum carpostomio aper- 

 tuin, carposporas obovatas in articulo terminali filorum a placenta 

 radiantium foventia. Antheridia in Br. Seaforthii cognita. Stichi- 

 dia axillaria, a ramulo proprio transformata, ramosa verrucosa, te- 

 trasporangia in articulo singula, subspirali ordine circumcirca dis 

 posita, triangule divisa foventia. 



Obs. Sequentes characteres de Bryothamnio prsebet J. Agardh : 

 Frondes a disco radicali exeuntes, nunc fibris quoque firmatae, ra- 

 mosissimse et in caespites ssepe fastigiatos collectse, recentes coc- 

 cineae aut purpurascentes, ssepe sordibus infestae, exsiccatione co- 

 lorem servantes aut facilius decoloraUe, nunc compressse et a mar- 

 gine ramulos distichos emittentes, nunc quoque a disco ramulosse 

 et ramulis decurrentibus 3-4-fariam angulatae, partibus tenuiori- 

 bus plus minus evidenter articulato-fasciatis. Ramuli aut infra 

 apicem divisi 2-3-cuspidati aut pinnatim compositi ramellis su- 

 bulatis. Cystocarpia a ramello transformata et pedicello ramuli ful- 

 cientis insidentia, subglobosa; pericarpium cellulosum plejostroma- 

 ticum, cellulis intimis oblongis subseriatis laxioribus, exterioribus 

 minoribus magisque angulatis; placenta basalis fila abbreviata fa- 

 sciculata exserens; carposporae minutse, obovato-piriformes, in arti- 

 culis supremis nidulantes. Stichidia a ramulis propriis, in axilla 

 aut juxta axillam ramulorum aut ramellorum provenientibus, trans- 

 lormata, juvenilia et fertilia ramulo fulciente breviora, parcius 

 aut dense ramosa fruticulosa, fusiformia, tetrasporangiis prominu- 

 lis verrucosa, effoeta elongata ac verrucoso-torulosa. Tetrasporangia 

 in articulis saepissime singula et simplici serie longitudinali spi- 

 raliter adscendente disposita. 



Bryothamnion triangulare (Gmel.) Kuetz. Sp. (1849) p. 842, J. Ag. 1631 



Sp. II, 3, p. 850, Falkenb. Rhodom. (1901) p. 172, t. 19. f. 32-33, 

 Fucus triangularis Gmel. in L. Syst. Natur. pag. 1383, Turn. 

 Hist. Fuc. tab. 33 (excl. habit. partim), Plocamiwm triangulare 

 Lamour. Ess. pag. 50, Thamnophora? triangularis A.g. Sp. p. 226, 

 Syst. p. 240, Mont. Cuba p. 56. Pl. V. fig. 1 f-i, Sphwrococcs 

 triangularis Mart. Fl. Bras. 1, p. 36 partim, Amansia? triangutaris 



