564 Myxophyceae, Sbigonemacese, Hapalosiphon. 



1. Mastigocoleus testarum Lagerheim Note sur la Mastigocoleus, nou- 

 veau genre des Algues de rordre des Phycocliromacees, in Notarisia, 

 1886, I, p. 65, tab. I, in W. et N. Alg. exs. n. 866«! Born. et Flah. 

 Rev. III, p. 54, Sur quelq. pl. viv. dans le test calc. des moll. 

 (1889) pag. CLXII, t. X, f. 4 et in W. et N. Alg. exs. n. 866 b\ 

 J. Schm. Cyan. Dan. p. 404, c. ic, Kirchn. in E. et Pr. Nat. Pfl. 

 MyxophyceDe p. 81, c. ic. p. 82, Setch. in C. H. et Setch. Phyc. 

 bor. Amer. n. 213 ! — Strato initio tenui-membranaceo, serugineo- 

 viridi vel griseo, deinde perforanti; filis varie curvatis, 6-10 \x. 

 crassis; vaginis tenuibus hyalinis; trichomatibus 3,5-6 jx. crassis, 

 glaucis; articulis cylindricis vel subcylindricis; heterocystis tricho- 

 matis diametrum superantibus, 6-18 [a. latis et longis. 



Hah. in Suecia in testis vetustis, socia plerumque Gomontia po- 

 lyrrhiza (Lag.) B. et. FI. et Hyella cmspitosa B. et Fl. in littore 

 arenoso ad Kristineberg in Bahusia (Lagerheim), in saxis calca- 

 reis et conchis ad litora Dania^ (Rosenvinge, Mortensen, J. Sch- 

 midt), in mari Baltico (Reinkej, in oceano atlantico ad litora Gal- 

 li[e (Bornet, Chalon, Flahault), in mari Mediterraneo ad Cette 

 (etang de Thau) (Flahault), in Nova Anglia Amer. bor. (Collins), 

 California (Setohell) et ins. Jamaica (Flahault) ; in Adriatico ad 

 Venetias (Forti). — Var. gracilis Hansg. Beitr. (Est. Ung. Kiist. 

 Bohm. in Sitzungber. d. Konigl. Ak. v. Wissensch. 1892, p. 220, 

 t. I, f. 11: filamentis vaginis tenuibus arcte circumdantibus 3-5 

 {Jv. crassis ramosis evidenter curvatis; ramis filamenta crassitudine 

 lequantibus; articulis 2-4 [j.. crassis diam., y,-2-pIo longioribus; 

 contentu olivascente vel a^rugineo-viridi; heterocystis in ramulis 

 lateralibus terminalibus, cellulis vegetativis haud majoribus, 3-4 [j.. 

 crassis, l-iy^-plo longioribus; vaginis arctis, achrois, non stratosis. 



— In rupibus calcareis in litore Dalmatico et Tergestino (Hansgirg). 



— Var. rosea Johs. Schm. Danm. blaagr. Alg. pag. 125 in Bot. 

 Tidskr. 1899, pag. 405: thallo perforanti, roseo vel lilacino, ma- 

 culas orbiculares demum confluentes efficiente; trichomatibus pur- 

 pureo-roseis vel purpureo-violaceis; articulis saspe irregulariter in- 

 flatis. — In conchis DosinicB exoletce maris « Kattegat » ad « Her- 

 thas Flak » (Kolderup Rosenvinge). — Stratum non est oculo 

 nudo distinguendum ab illo Conchocelidis roseae Batters. — Obs. 

 Sententia cl. Kirchneri h^ec species ssepe, socia Hyella c«spitosa, 

 gonidia Verrucarice consequentis fingit. 



HAPALOSIPHON Naeg. [1849] in Kuetz. Species p. 894 (Etym. apalos 



