Myxopliyceee, Soytonemacege, Scytonema. 511 



p. 374, 1879, Born. et Fl. Rev. III, p. 96. — Strato toinentoso, 

 siibcrustaceo, fusco-nigro; filis dense iniplicatis, usque ad 25 \).. 

 crassis; pseudo-ramis crebris, brevibus, flexuosis, ad apices rotun- 

 datis sed apiculo conico achroo soepissime terrainatis; vaginis am- 

 plis, 10-14 ]x. latis, aureo-fuscis, stratosis ; articulis splioerico-com- 

 pressis vel subcylindraceis; heterocystis globosis aut eIlipticis,aureo- 

 fuscis; sporis intense fuscis, globosis aut ovatis, exosporio crassiu- 

 sculo et hevi. 



Hab. ad rupes calcareas maritimas prope Panormum Sicilite 



(l^ORZi). 



38. Scytonema Intertextum avuetz.) Rab. FI. Eur. Alg. II, p. 263, 1197 

 Wolle Freshw. Alg. of U. S. p. 258, t. CLXXXVI, f. 10-14, Sym- 

 phyosiphon intertextum Kuetz. Sp. Alg. 323, nec Hilse in Rab. 

 Alg. exsicc. n. 1177! Calothrix intertexta Breb. in Kuetz. Sp. 

 loc. cit. nec Kirchn. Alg. v. Schles., Calothrix Kuetzingii Beck 

 Flora von Hernstein p. 269 (cfr. Hansg. Grundziig. d. Alg. Nie- 

 deroster. 1905, p. 490). — Strato plus minusve crasso, tomentoso, 

 compacto, nigro-fusco viridescente; filamentis adscendentibus, ad 

 20 {j.. diam. pseudo-ramulis fasciculatis, flexuoso-curvatis, dense 

 implicatis; trichomatibus passim irregulariter torulosis, 12-16 [x, 

 diam.; articulis granulosis, diametro subsequalibus vel paulo loiigio- 

 ribus; vaginis subcrassis, passim paullo intumescentibus, evidenter 

 stratosis, luteolis vel subcarneo-luteis, rarius fuscescentibus, hic 

 illic stratis exterioribus in fibrillas achroas discedentibus; hete- 

 rocystis ad pseudo-ramulorum basim solitariis vel geminis, oblon- 

 gis vel subglobosis, dilutissime fuscis. 



Hah. in rupibus madidis et in terra humida, inter muscos 

 GaIIi;e (Lenormandj, Austrite (Hansgirg, Zukal), Angliae (fide Ra- 

 benhorst), Dani£e (Hansen), Floridce Amer. bor. (Wolle). 



29. Scytonema Austinii Wood Contrib. Freshw. Algai of U. S. p. 58, H98 

 Wolle Freshw. Alg. of U. S. p. 261. — Strato tomentoso, caespi- 

 toso, crasso, fusco-nigro; filamentis adscendentibus, curvatis, ple- 

 rumque simplicibus, 15-20 jj.. diam. ; trichomatibus aunigineis vel 

 fuscescentibus, 4-10 \^. diam., apicibus snepe valde incrassatis, plus 

 minusve conspicue articulatis ; articulis diametro plerumque valde 

 brevioribus, interdum longioribus; vaginis rufo- vel aureo-fusce- 

 scentibus, siiepe subopacis, firmis, indistincte lamellosis, apice ple- 

 rumque achrois, superficie subrugosa et hirta; heterocystis breviter 

 cylindricis vel subquadratis vel subglobosis, interdum valrle com- 

 pressis et diam. miilto brevioribus. 



