KONGL, SV. VET. AKADEMIENS HANDLINGAU. BAND. 20. N:0 5. 315 



Gen. Urospora Aresch. 



Obs. Phyc. 1, p. 15. 



Urospora Penicillifor mis (Roth) Aresch. 

 Obs. Phyc. 2, p. 4. Conferva penicilliforrais Roth, Cat. Bot. 3, p. 271. 

 Descr. Urospora penicilliformis Akksch. 1. c. 

 Fig. Lyngbya Carmich<ielii Harv. Phyc. Brit. t. 186, A. 

 i> CutlerisB » » » t. 336. 



» speciosa » » » t. 186, B. 



Conferva Toungeaua » » » t. 328. 



Exsicc. Conferva speciosa Aresch. Alg. Scaud. exsicc. N:o 132, 185. 

 » hormoides » » » » » 133, 186. 



Horraiscia flacca » » » » » 342. 



Urospora mirabilis » » » » » 340. 



» penicilliformis Wn-TR. et Nordst. Alg. exsicc. N:o 417, 418. 



Syn, Conferva hormoides J. G. Ag. Spetsb. Alg. Progr. [). 2; Bidr. p. 11. 

 » » LiNDBL. Bot. Not. p. 158. 



» » WiTTR. in Heugl. Keisc, p. 284. 



» Youngeana Croall, Fl. Disc. p. 461. 

 Lyngbya Carniichailii Croall, 1. c. p. 461. 

 » flacca » » » 462. 



» speciosa » » » » 



Urospora mirabilis Kleen, Nordl. Alg. p. 46. 



» penicilliformis Kjellm. Spetsb. Thall. 2, p. 55; Aigenv. Murm. Meer. p. 56. 



Hahitat. This alga is litoral, usually growing on stones and rocks above tide- 

 luark, soinetimes in rock-pools within or somewhat above the litoral zone. It grows 

 gregarious in considerable masses both on exposed and sheltered coasts, but exposed 

 localities are preferred by it. I have found specimens with zoospores at Spitzbergen 

 in the niiddle of Jyly, at Novaya Zeinlya at the end of Jyly, on the north coast of 

 Norway in August. 



Geogr. Dwtrib. It is probably circuuipolar. However it has not been found as 

 yet it) the Siberian and American Arctic Seas. Its maximum of frequency is on the 

 north coast of Norway. The most northern place where it has been taken is Trenrcn- 

 berg Bay on the north coast of Spitzbergen, Lat. N. 79° 56'. 



Localities: The Norwegian Polar Sea: Nordlanden, common; Finnntrkeu, local, but 

 abundant at Maasö. 



The Greenland Sea: the north-east and south-east coasts of Spitzbergen, local aud 

 scarce. 



The Kära Sea: Kjellman's Des, scarce. 



Bafjin Bay: the coast of Greenland at Frideriksdal, Nanortalik, Sermilik, Julianes- 

 haab, Godthaab. Besides, it has been found floating in the sea at several places oft' 

 the coast. (Cp. Croall 1. c. and Dickie, Alg. Sutherl. 1, p. 143). 



