521 



260 Eii-Floi'itleae, Tylocarpese, Sterrocolnx. 



superficiem plantoe hospitis pliis miiius longe lateiiue expansus, 

 eximie (inferiori parte) parasiticus. Tetrasporangia catenatim con- 

 juncta, cruciatim divisa (nonnunquam contentu indiviso [monospo- 

 rangia]). Cystocarpia et antheridia ignota. 



Obs. Algse parasiticse nemathecia mentientes, in frondibus spe- 

 cierum Phyllophorce [Eti-PhyUophorce) vigentes '). 



1. Colacolepis declpiens Schmitz 1. c. p. 415. 



Hab. in frondibus Phyllophorce Heredicv in mari Mediterraneo 

 ad littus AlgerisB (Roussel), Corsicse et Peloponnesi (Boky), ad Gades 

 collectsB (Willkomm). 



2. Colacolepis incrustans Schmitz 1. c. p. 40G. 522 



Hcib. in frondibus Phyllopliorce nervosce in mari Mediterraneo 

 ad littus Corsicse (Lebel) et Algerise collectse (Roussel) et Phyllo- 

 phorcG rubentis in oceano Atlantico ad littus Gallise (Hb. Paui- 

 siense). 



STERROCOLAX Schmitz [1893] Die Gatt. Actinococcus p. 397 (Etym. 

 sterros durus, solidus ct colaiJO,colacosirdva.H\tm), Schmitz et Hauptfl. 

 in Engl. & Prantl Natiirf. Pflanz. 142 (1896), p. 366. — Thallus (in 

 Ahnfeltia) parasiticus, pulviniformis, plano-convexus, superficiei 

 algse hospitse adpositus, intra corticem matricis penetrans rhizoidum- 

 que ope arcte adhiierens, contextu densissimo, subtiliter filamentoso 

 et parvicellulari, filis radiatim dispositis. Sporangia minutissima, in- 

 divisa (monosporangia) in pulvinuli superficie sparsa, numerosa, 

 cortice exteriori immersa, in filis radiantibus acrogena. Cystocarpia 

 et antheridia ignota. 



Obs. Genus quoad locum systematicum, fructibus sexualibus 

 adhiic ignotis dubium, interea, pra?eunte claro Sclmiitz, ad calcem 

 Gigartinacearum dispositum. 



1. Sterrocolax decipiens Schmitz Die Gatt. Actinococ. p. 394, t. Vll, .523 

 f. 11-12. — Pulvinulis hemisphairicis, tota pagina inferiori (zona 

 marginali latiuscula excepta) matrici adhccrontibus, filorum simpli- 

 cium aut fasciculatorum ope contextui plantse hospitis affixis; 

 monosporangiis ex apice filorum radiantium in regione corticali 

 evolutis. 



') Conferencla siiiit oi'gan{i, nominc pscudo-nematlicciornm. pro Plii/llopliora 

 Jlarcdia, nervosa et rubcnte dcscripta. 



