54fi M^-xophycese Suytonemacete, Tolypothrix. 



n. 17 (fide Borneti), Tab. phyc II, p. 11, t. 39, f. I, Sp. Alg. p. 319, 

 Calothrix distorta Aresch. Alg. Scand. exsicc. ser. I, n. 83, ser. II, 

 n. 191, non Harvey nec Chauvin, Hypheothrix Callitrichce Kuetz. 

 Phyc. gen. p. 229, Tolypothrix pygmcea Kuetz. Phyc. gen. p. 227, 

 Sp. Alg. p. 313, Tab. phyc. II, p. 9, t. 31, f. IV, Bulnh. in Rab. 

 Alg. exs. n. 973! Fl. europ. Algar. II, pag. 275, Tolypothrix cega- 

 gropila Kuetz. var. pygmcea Kirchn. Alg. v. Schles. p. 228, Cooke 

 Brit. Freshw. Alg. p.- 209, t. CIX, f. 2, Tolypothrix rufescens 

 Hass. Brit. Freshw. Alg. p. 241, tab. 69, f]g. V, Kutz. Sp. Alg. 

 pag. 315, Tolypothrix pulchra Rabenh. Algen n. 191! Suringar 

 observ. phyc. p. 41, non Rab. nec Klitz., Tolypothrix fiaccida De 

 Bary in Rab. Alg. n. 311, non Kiitz., Tolypothrix cegagropila 

 p Kneiffii De Bary in Rabenhorst Algen n. 212, Tolypothrix 

 andina Montagne pag. 4, in Ann. des sc. nat. 4 serie, Bot., VI, 

 p. 182, Tolypothrix Wartmanniana Rab. Alg. exsicc. n. 769! Fl. 

 europ. Algar. II, p. 276, Aresch. Alg. scandinav. exsicc. ser. II, 

 n. 3781 Borzi Morf. etc. in N. G. bot. ital. XI, p. 371, Wittr. et 

 Nordst. Alg. exsicc. n. 186! Lynghya Phormidium Rab. strato 

 sordide fusco Algen n. 930 1 Tolypothrix lanata var. tenujor 

 Rabenh. Alg. n. 1033, Tolypothrix gracilis Rabenh. Alg. n. 10521 

 Scytonema Callitrichce Rabenh. Fl. europ. Algar. II, p. 260, To- 

 lypothrix coactilis Ardiss. e Straff. Enum. delle Alghe di Liguria 

 p. 81, non Kiitz. — Fronde coespitoso-floccosa, rarius in stratum 

 pulvinatum extensa, seruginea, demum fuscescenti; filis 2 centime- 

 tra altis, 8-10 [i. crassis, repetite pseudoramosis ; pseudoramis 

 erecto-patentibus, flexuoso-curvatis; vaginis membranaceis tenui- 

 bus ad basim ramorum plerumque inflatis, hyalinis vel lutescenti- 

 bus; trichomatibus 6-8 \).. crassis, cylindricis, asrugineis; articulis 

 diam. sequalibus vel longioribus; heterocystis 1-5, saepius achrois. 

 Hab. ad plantas submersas vel natans in aquis lente fluentibus, 

 rarius ad saxa, in rivulis Sueciae (Areschoug, x\gardh, Nordstedt, 

 Lagerheim, Wittrock), Norvegite (Nordstedt), Fennise (Elfving), 

 Lapponiie lulensis (Bohlin), Danioe (Hofman-Bang, Lyngbye), ins. 

 Faeroensibus (Borgesen), Hiberniae (West), Angliae (Cooke, West), 

 Belgii (Flahault, De Wildeman), Gallite (Mougeot, Bornet et 

 Flahault), Helvetise (Wartmann), Germani;e (De Bary, Kuetzing, 

 Rabenhorst, Kirchner, Lemmermann etc), Austrife (Hansgirg, 

 Schaff, Grunow), Polonife (Raciborski), Galicias (Gutwinski), Ita- 

 lise (Arcangeli, Garbini, Forti), Bosni^e (Protic), Tyrolice, Istrite, 



