Myxophycese, Stigonemaceye, Hapalosiplion. 569 



Tab. phyc. II, p. 9, t. 31, f. III, Rab. Alg. exs. n. 152G! Fl. europ. 

 algar. II, pag. 283, Hapalosiplion Braunii Naeg. in Kiitz. Sp. 

 Alg. pag. 984, Moug. et N. St. Vog. Rh. n. 1284 (nec 1489) fide 

 Borneti (e specim. Lenormandiano!), Fisch. Beitr. zur Kenntn. der 

 Nostoch. pag. 22, f. 12, Itzigsohn Schiz. zu einer Lebensgesch. des 

 H. Braunii t. 4, f. 1-25, Rab. Fl. europ. Alg. II, p. 283 et in Alg. 

 exs. n. 2289! Wittr. et Nordst. Alg. exs. n. 95, Borzi Morf. o Biol. 

 in N. G. B. it. XI, p. 384, Wolle Freshw. Alg. of U. S. p. 275, 

 tab. CXCVI, f. 2-4, Hapalosiphon Brebissonii Rab. Fl. eur. Alg. 

 II, pag. 284, Nordst. Wittr. et Nordst. exs. n. 94 (fornia globosa), 

 Borzi Morfologia etc. loc. cit. p. 384, Wolle Bull. of Torr. Club 

 (1881) p. 39, Freshw. Alg. of U. S. p. 277, t. CXCVI, f. 1, Calothrix 

 rhizomatoidea Reinsch in Hedwigia V, p. 153, 1866, in Rabenh. Alg. 

 exs. n. 1904! Tolypothrix rhizomatoidea Reinsch Algenfl. von Fran- 

 ken p. 52, H. pumilas var. rhizomatoideus Hansg. Prodr. II, p. 26, 

 Hapalosiphon fiiscescens Borzi loc. cit., pag. 383, 1879, Wolle 

 Freshw. Alg. of U. S. p. 277, tab. CXCVI, f. 22-23. — Thallo 

 floccoso-ca3spitoso, sordide aerugineo, 3 min. alto; Illis primariis 

 repentibus intricatis, 21-24 ji.. crassis, sa^pe torulosis, latere supe- 

 riori dense ramosis, e cellulis singulis, passim binis ternisve, dia- 

 metro subajqualibus, vagina crassiuscula, septata involutis, filis se- 

 cundariis erectis, 9-12 [i. crassis, elongatis, simplicibus; trichoma- 

 tibus e cellulis singulis, cylindricis, diametro longioribus, in vagina 

 continua inclusis, constantibus; heterocystis intercalaribus; hor- 

 mogoniis 100-300 (x. longis, 6 jx. crassis, e 14-BO cellulis formatis. 

 Hab. ad folia et caules plantarum in stagnis, paludibus et fos- 

 sis turfosis Lapponiae lulensis (Bohlin), Fenniae (Elfving), Po- 

 lonise (Alexenko) et ad Moscoviam Rossiffi (Iwanow), Norvegiie 

 (Hofman-Bang), Suecite (Agardh, Flahault, W^ittrock et Nord- 

 STEDT, Lagerheim), Galliie superioris et mediae (Mougeot, Lamy, 

 BoRNET et Flahault), ins. Faeroensium (Borgesen), Dani^e (Lyng- 

 BYE, Rosenvinge), GermaniiB (Kuetzing, Rabenhorst, Kirchner, 

 Itzigshon, Reinsch, Richter! M. Schmidt, Schmidle), Bavari» 

 (GLiicK), Austriae (Beck, Hansgirg), Tyroliae (Heufler), Bosniae 

 (Protic), Bohemiae (Hansgirg), Helvetiie (Rabenhorst), in monti- 

 bus Gigantum (Schroeder, Lemmermann), Italifie in thermis apo- 

 ninis (Pollini), Americte foederatae (Wolle) , in lacu « Kilpa- 

 trick» Amer. bor. (Tilden), in ditione Alaskana (Saunders) et 

 ins. Jamaica (Collins), Brasilite (Lofgren, Mubius), in Plagio- 

 chila Hyadesii Fuegiae (Hariot), Australiie (Nordstedt, Moebius), 



