Eii-Flori(ic;r, Helniiiithoclndiaceae. 47 



STERROCLADIA ^(•liiuitz [1893] Algengatt. Actinococnis p. 388, Engl. 

 vV: Pnintl N:i,tiirl. rMaiizeiirain. 111, p. ;)27 (Mtym. sterros solidiis 

 ct clados lanuis), (hjinnoijongri sp. Mont. — 'riiallns orectus, 

 teros, hitcraliter valde rainosus, parenchyniatirus, axis ceiitralis 

 tennis articulatus cortice latinsculo denso parenchynia,tico cinctus; 

 celhihc corticales extinicc niinutissimte, arcte contigua}; crescentia 

 terminalis. Antheridia (tantnm hncusque cognita) in nematheciis 

 allantoideis ad ramos sparsis (imnio ramos amplectentihus) singulis 

 ant verticillatim dispositis, stratum snperficiale spermatangiornm 

 minutornm ovoideorum pnehentia. 



Obs. (lenus speciem unicam aquai dnlcis incolam auqiloctens. 



1. Sterrocladia amnica (Mont.) Schmitz Algengatt Actinococcus p. 74 

 388, Gynmoyongrus anmicus Mont. Crypt. Guyana n. 11, Ami. 

 Sc. Nat. Bot., 1850, p. 289, Syll. crypt p. 411, n. 1558, Kuetz. 

 Tah. Phyc. XIX, t. 68. — Characteres generis. 



Hah. ad rupes in rivulis aqu^e dulcis montium « Kau » dictorum 

 Guyanae (Leprieur). — Frons csespitosa, gracillima, rhodomeloides, 

 irregulariter dichotome virgato-ramosa, divisionibus extremis l)i- 

 furcis. Color atro-violaceus. 



Fam. VI. HELMINTHOCLADIACEJ; (Harv.j Schmitz 



Hi'hiuHiliocl(i(U<r \\:\v\. [1S55] iii H<>(«k. Kl. N.nv Zrnl. II. |.. 245. 

 Helniinthockideue J. A--. [1852] Sp. II. p. 410. 



Helminthocladiacete Si-limitz [1H89] Sysf. Uebers. Fiorid. p. 4, Eii;^!. & Praiit! 

 Nntiir!. Pflaii/LMifam. 141 p. 327. 



Thallus filiformis, teres aut compressus, varie ramosus, plerum- 

 que gelatinoso-lubricus, nonnunqnam calce incrustatus: strnctura fihi- 

 mentosa conspicua, axi centrali siepius pra^sente. Goniniolilastns 

 sistens caespitulnra confertnm convexum filorum articulatorum (lilie- 

 rornm aut gelatina plus minus dense coliibitorum) ceUnlas terminales 

 (rarius etiam subterminales) in sporas transmutatas praibentium, in 

 thalli superficie externus aut immersus, tegumento proprio (peri- 

 carpio) carens, tantum nonnunquam filis protegentibns concomitatus. 

 Sporangia plerumque monospora, nonnunquam divisa. 



