Contiibution. 1. 



145 



tliread. Cp. t. 2, fig. 17—19, Perhaps tlie species, in tlie 

 sense here tåken, includes two different forms. 



Tiie species in question is litoral, and gro\ys on wood- 

 work or epiphytic on Fucaceæ. Once I met "witli it attached 



r 



to Bhodymenia pdlmata. It also occurs on rocks at high- 

 water mark, especially in localities where small freshwater- 

 streams are moistening the rock, Specimens with zoospores 

 have been coUected in Angust. 



BisrihiiUon: Found at Sværholt, Kjollefjord and Vardo, 

 2:ather scarce, and at Pasvig and Smaastrommen in Sydva- 

 ranger, local but pretty plentiful. 



Fam. Confervaceæ (Bonnem.) Lagerh. 



in Ber. Deutsch. bot. Ges. Bd. 5, p.409; Bonncm. in Journ. Pliyc. XCIV, 

 P- 193; lim. mut. 



Gen. Urospora Aresch. 



Obs. Phyc. 1, p. 15. 



■ \ 



Urospora penicilliformis (Eoth) Aresch. 



Obs, Phyc. 2, p. 4; Confcrva penicilliformis Rotli. Cat. Bot. 



271. 



L 



-^(ificr. Urospora penicilliformis Aresch. 1. c; excl. syn. plur. 



Ulotbrix isogona Farl. New. Engl. Alg. p: 45. 

 •^W* Hormo tri clmm pcnicilliforme Kiitz. Tab. PLyc. 3, t. 64. 



vermiculare Kiitz. 1. c. 



B, p 



a 



» 



» 



isogonnm Kiitz. 1. c. t. 65. 

 Youiiganum Kiitz. 1, c. 



^xsio 



Lyngbya apeciosa Harv. Pliyc. Brit. t. 186, B. 

 Conferva Yonnffana Harv. 1. c. t. 328. 



^*cc. Lyngbya speciosa Wyatt, Alg. Danni. Nr. 196. 



Conferva speciosa Aresch. Alg. Scand. exsioc. Nr. 132 et 185. 



4 ir hormoides Aresch, 1. c. Nr. 133 et 186, 

 Urospora mirabihs Aresch. 1. c. Nr, 340, 



penicilliformis Witlr. et Nordst, Alg. exsicc. Nr. 41 



» 



7 



et 418. 



10. 



i 



