Eu-Floridese, Spermothamniefe, Spermofchamnion. 1250 



Frondes 5-8 cm. longae ct ultra, 0,5-1 millim. fcre crassae, ex ad- 

 paratu radicali fibroso exsargentes, ramis lateralibus conformibus 

 oppositis vagisque obsita3 et ad geniculum quodque ramellis bre- 

 vibus incurvis oppositis verticillatisque ornatae. Tetrasporangia in- 

 teriori latere ramellorum juxta basin sessilia, seriata, perisporio 

 amplo donata. Cystocarpia apice ramulorum terminalia, diametro 

 frondis duplo crassiora, involucro ramellorum elongatorum sutTulta 

 et cincta. Color roseus sou carneus, in sicco vix mutatus. Sub- 

 stantia membranacea, flaccidiuscula. Nunc obveniunt frondes ex- 

 imie verticillatim ramellosaj, nunc longis intervaliis denudatae. 



SPERMOTHAMNION Aresch. [1877] in Fries Summa Veget. Scandi- 



navise I, p. 127 (Etym. sperma semen et thamnos caespes), Nova 

 Aeta Upsal. XIII, pag. 334, Born. et Thur. Notes algol. I, p. 24, 

 Pringsh. Morph. (1862), Ardiss. Phyc. Medit. I, pag. 293, Hauck 

 Meeresalgen p. 42, J. Ag. Anal. Algol. (1892) p. 48, Engl. & Prantl 

 Natiirl. Pflanzenfam. (1897) p. 486, Kerpothamnion Naeg [1861] 

 Beitr. Ceram. p. 348 saltem pro maxima parte. Callithamnii, Con- 

 ferva?, Ceramii, Griffithsiai sp. auct. — Frons filiformis, articu- 

 lata, monosiphonia, nuda, filis rhizomatoideis radicantibus filisque 

 erectis opposite vel unilateraliter ramosis fertilibus constituta. Cy- 

 stocarpia terminalia, globosa, ramulis paucis involucrata, carpospo- 

 ras rotundatas a cellula placentari quoquoversum radiantes, sin- 

 gulas sacculo seu perisporio hyalino inclusas foventia. Antheridia 

 interiore latere pinnularum evoluta, nunc terminalia, ovoideo-ob- 

 longa, e cellulis hyalinis circa axiin dispositis constituta. Tetra- 

 sporangia sphserica, interiore latere pinnularum sparsa vel in ra- 

 mulis propriis aggregata, triangule divisa. 



1. Spermothamnion Turneri (Mert.) Aresch. Enum. Phyc. pag. 113 1966 

 (excl. synon.), Born. et Tbur. Notes algol. I, tab. 8, fig. 4-5, Ar- 

 diss. Phyc. Medit. I, p. 299, Hauck Meeresalgen pag. 42, fig. 11 d, 

 Buffham Anther. of some Florid. (1884), p. 341, t. X, f. 6, Cera- 

 mium Turneri Mert. in Roth Catalecta botan. III, p. 127, tab. 5, 

 Ag. Syst. pag. 142, Grev. Crypt. FI. tab. 355, Conferva Turneri 

 Dillw. Conf. t. 100, Engl. Bot. tab. 2:539 (nec tab. 1637), Calli- 

 thamnion Turneri Ag. Sp. pag. 160, Harv. Man. p. 114, Phyc. 

 tab. 179, Kuetz. Sp. p. 649, Tab. Phyc. XI, t. 80, f. d-h, J. Ag. 

 Sp. II, p. 23, Epicr. pag. 17, Callithamnion suhverticillatum Za- 

 nard. in Kuetz. Tab. Phyc. XI, t. 81, f. a-c, Callithamnion rigi- 



