500 



PILINIA Kiitz. 



176. P. maritima (Kjcllm.) Rosenv., Grøn]. Havalg., p. 032. 

 Found on rocks near high-water mark, intermingled in incrus- 



talions of blue-green algæ. Bore sporangia in June. 

 Found hitherto onlj T on Sando: near Sand (!). 



Order MYCOIDEACEAE. 

 ULVELLA Crouan. 



177. U. confluens Rosenv., Grønl. Havalg., p. 924. 

 Specimens which quite agreed with the description and figures 



of Ro s en vinge have been found epiphytic on Gigartina mamillosa. 



Found on open coasts between tide-marks. Bore sporangia in April. 



Along the Færoese coasts it has hitherto been found on Str. : Vel- 

 bestad (!). 



178. U. fucicola Rosenv., Grønl. Havalg., p. 926. 

 Found epiphytic on Fnciis in flat ns. 



Probably comraon. Found hitherto only on Syd.: Tværaa (!). 



PRINGSHEIMIA Rke. 



179. P. scutata Rke. Algenflora, p. 81, Atlas tab. 25. 



Found as an epiphyte on different algæ, e. g. Polysiphonia nr- 

 ceolata, Ceramium rubrum, Sphacelaria, Lanrencia pinnatifida as also 

 on Zostera marina. It has been found between tide-marks as well 

 as in the sublittoral zone where the water is not very deep, and 

 is met with both on open coasts and in sheltered localities. Sterile 

 piants occurred in May and June, and sexual piants in June. 



This species is presumably comraon along the Færoese coasts. 

 Found in the following localities: — Ost.: Ore(!); Str.: Kvivig (!), be- 

 tween Thorshavn and HojvigO); Syd.: Trangisvaagfjord (!), Vaagfjord !). 



Order CLADOPHORACEAE. 



UROSPORA Aresch. 



180. U. mirabilis Aresch. Rosenv., Grønl. Havalg., p. 918. 

 The basal part of the plant (lig. 100) by which it is attached 



to rocks and stones, is peculiar in ha vin g intracellular as well as 

 extracellular rkizoids. The laller, which seem to be the most com- 

 nioii, resemble very closely those of U. Wormskioldii, and in both 

 cases they grow downwards along the sides of the shoot. The 



