Myxophyceae, Scj^tonemaceae, Tolypothrix. 547 



Dalniatise (Hansgirg), Hispanise (Puiggari), ins. S. Vincentii (West) 

 et Mauritii (Jadin), Madagascaria3 (West), Americae fcederatae 

 (Farlow, Gardner), Alaslae (Saunders), Groenlandiae (BoERaESEN), 

 Indije Batavorum (Raciborski), Boliviib (Grunow^), Fuegiie (Ha- 

 RiOT, Borge), Australiae et Papuasiae (Borzi) et ins. Bornei (Beccari); 

 eadem species ad fila PUophorce Rottlerii pr. « Rio Janeiro» (Gru- 

 Now) et ad Montevideo libere natans (Wille). — Forma bryophjla 

 Rab. Fl. Eur. Alg. loc. cit., Kirchn. Alg. Scliles. pag. 227, Wolle 

 Freshw. Alg. of U. S. p. 265, t. CLXXXI, fig. 5-7: late expansa 

 formans stratum tenue, cliartaceum, candescens, trichomatibus 2,5-3 

 [X. diam. — • Cum typo (Rabenhorst, Royers Wolle). — Forma pal- 

 lescens Rab. 1. c. pag. 274, Kirclin. 1. c, T. lanata var. tcnuior 

 Hilse in Rab. Alg. exs. n. 1033! cieBpite pallido, vaginis plerum- 

 que luteis. — Cum typo per Europain (Rabenhorst). — Var. tin- 

 gens ?Kreisch. in Rab. Alg. Eur. n. 21521: filamentis perlongis, 

 olivaceo-viohiceis. — In stagno Saxoniie ad Zwicliau (Kreischer). 

 — Ohs. Cl. Hansgirg speciem hanc interdum in varietates divi- 

 dit: Var. [3 pygmaea (= T. pygma^a Kuetz.): strato plerumque 

 parum expanso, chalybseo-viridi vel brunneoio; filamentis vaginis 

 achrois vel luteolis circa 6-8 [j.. crassis; articuHs subquadratis 

 vel paulo brevioribus, contentu Icete aerugineo-viridi. — Var. y 

 Wartmanniana (= T. Wartnianniana Rab.): strato pulviniformi, 

 plerumque ca^ruleo vel luteo-viridi ; filamentis 6-9 (x. diam., in 

 floccis arcte consociatis, ssepe inconspicue articulatis; articulis 

 diam. 1-2-pIo longioribus; heterocystis siepe singulis, membranis 

 incrassatis; cetera ut in typo. — Tamen, meo consilio, suadente 

 etiam sententia cl. J. Schmidtii, qui T. lanatam cura T. tenui 

 conjungit, Tolyp. tenuis Kuetz. a Tolyp. lanata Wartmann est vix 

 distinguenda, ergo varietates a cl. Hansgirg ex veteris speciebus 

 Kuetzingianis et Rabenhorstianis revocatse nirais incertte mihi vi- 

 dentur. 



6. Tolypothrix Chathamensis Lemm. Planktonalg. in Ergebn. ein. Reise 1268 

 n. d. Pacific (1899) p. 355. — Filamentis ramosis, vagina inclusa 

 10-13 [j.. diam.; pseudoramis filamento primario aequilongis, ortlio- 

 goniis; vaginis hyalinis, stratosis, demum superficie externa irregu- 

 lari; articulis B,5 [j.. diam., 6-12, «j.. longis; heterocystis bino-qua- 

 ternatis vel subcylindricis, 8-9,5 u.. diam., 14-22 [j.. longis. 



Hah. ins. Chatham oceani Pacifici (Schauinsland). 



7. Tolypothrix Woodlarkiana Borzi Alg. d. Papuasia pag. 43. — Cte- i269 

 spitulis densis, laete serugineis, 1-2 mm. altis; trichomatibus 8-10 



