140 Myxophyceae, Chamaesiphonacese, Chamaeslphon. 



arctici (Wille). — Var. Turneri nob., C/iam. sp. Tarn. Alg. aq. dulc. 

 Ind. Orient. (1892), p. 13: articulis fere rectis. In India (Turner). 



10. Chamaesiphon torulosus Borzi Morf. e biolog. delle Alg. ficocr. in 355 

 N. G. B. It. 1882, p. 313. — Gonidangiis rectis vel incurvatis, 

 basi attenuatis, cylindraceo-subclavatis, membrana hinc et illinc 

 leviter sinuoso-constrictis, ad 10 [i. crassis et usque ad 40 {a longis; 

 gonidiis 4-5 [i. latis, numerosis. 



Hab. in Potamogetone crispo in Etruria ad «Vallombrosa» 

 (BoRzi). 



11. Chamaesiphon gracilis Rabenh. Fl. Eur. Alg. II, p. 149, Borzi Note ^56 

 Morfol. biol. Ficocrom. III, p. 313, Gom. in Bull. Soc. bot. de Fr. 



t. XLIII (1896) p. 377, t. IX, f. 1-4, non Spho^rogonium gracile 

 Rostaf., Hansg. Prodr. II, p. 124, f. 37 c. — Gracilis, filiforniis, so- 

 litarius, cylindraceus; gonidangiis adultis rectis vel leniter curvatis, 

 medio 1-5, raro 2-5 ;x. diametro, 25-30 [x. longis, raro longioribus, 

 basi in stipitellum angustatis, apice acuminatis vel rotundatis, sce- 

 pius inconspicue articulatis ; articulis circa idem longis ac latis; 

 contentu pallide-ca^ruleo vel olivaceo; gonidiis numerosis, parvulis. 

 Hab. in Vaucheria clavata, in fossa prope Strehlen ad 

 Dresdam Gerinaniae (Rabenhorst), in Hispania (M.'' Lewin), Bohemia 

 (Hansgirg), in surgentibus fluminis Albis (Schorler), in Norvegia 

 (Foslie) et insula Nova Semlja (Wille). — forma major Magnus 

 et Wille in Jusfs Bot. Jahresb. 1882, I, p. 313, Sitzungsber. der 

 Ges. Naturforsch. Freunde zu Berlin 1882; cellulis crassioribus, 

 2-3 [x. diam., 100 (x. longis. In filis Ulotrichis cujusdam in Her- 

 petone tentaculato Lacep. epiphytica ad «Bangkoli» ditionis Sia- 

 mensis (von Martens). — forma elongata Wille Nov. Seml. Alg. 

 p. 23, t. XII, f. 2, Bidr. Sydamer. Algfl. p. 28 : longit. 60 [x. ; lat. 

 vag. 2 [j-. Socia forma typica in Arvernia (Gomont), in lacu «Dreck» 

 Holsatife (Lemmermann), in cataracta ad « Lulea Elf» SuecicC 

 (Lagerheim), in Nova Semlia (Wille), ad « Montevideo » Amer. 

 merid. (Willej et «Semerang» ins. Javje (Benecke). 



12. Chamaesiphon marinus Wille in Wille et Rosenvinge Alg. fra 3B7 

 Novaja Semlja og Kara-Havet p. 4, t. XIII, f. 1 a-b, Foslie Contrib. 

 Alg. Norv. I, p. 168. — Parvulus, erectus, filis solitariis; cellulis 

 initio singulis vel binis consociatis, 0,5 [l. diam., membrana facil- 

 lime conspicua circumfusis, deinde in gonidia complura secus se- 

 riem singulam disposita divisis, tegumento incoiispicuo circunifusis. 



Hab. in Ulotriche submarina epiphytica ad oras Nova3 

 Semliai (Holm) et ad oras Norvegiaj (Foslie). 



