fcoutribution. I. 



i 



129 



Spee. Alg. p. 349. 



JPescr, Schi/ogouium radicans Gay 1. c. 



Fig. 



Ulothrix discifera Kjellin. Spetsb. Thall. 2^ p. 52. 

 „ radicans Kiitz. Tab. Pbyc. 2, t. 95. 

 „ discifera Kjelbn. 1. c. t, 5, fig. 10—14. 



Syn. Honnidiura murale De-Toni, Syll. Alg. 1, p. 156; ex par te fide 



syn, 



In tlie eastern pait o£ the clistrict I met witli a ScJii- 

 ^ogonium which no donbt is identic with Ulothriø radicans 

 Ktitz. It corresponds well with fig. a. a', a", and b. c. e. in 

 Ktitz. Tab. Pbyc. 1. c. This plant is considered by D e- 

 Toni to belong to Ilormidium murale, 1 agree with Gay 

 Q-s to the limitation of the latter, and keep Schi^. radicmis 

 ^ distinct species. On the other hand, the Finniarkian spe- 

 cimens fully coincide with Utoihrix discifera K j e 11 m. in 

 shape as well as thickness. ladividuals -vvhich exactly re- 

 semble thefignresby Kjell man 1. c, exceptfig. 12, were 

 common together with other resembling the figures by Klitz- 

 ^^g, and without any limit between them. Sometimes two 

 ^hreads are grown together. 



The present plant occurs on rocks at or a little above 

 ^gh~water mark, on exposed coast. It forms rather thin 

 *^iit densely interwoven strata, mostly with rough or nndu- 

 late-lacunosed surface. It also grows in small number toge- 

 ther with other smaller algæ on rocks between tides,. 



Distrilmtion: Found at Horno on Yardo, local but 

 pretty plentifu], and in two localities . at Vardo togetiier 

 ^ith Caloihrix and other algæ, scarce. 





■l. 



Fam. Cladophoraceæ (Hass.) Wittr. 



Pitopb. p. 43; Bass. Brit. i^'resbw. Alg.; Hm. mut. 



Gen. Spongomorpha Klitz 



Pbyc. gener. p. 273. 



9. 



-1 



^r 



