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or less porous, composed of numerous, minute and more or less- 

 horizontal lamels. The lamels of the surface form small wart-like 

 or irregular and densely crowded processes, which partly are formed 

 by a single, convex-concave partly and most frequently composed 

 of more lamels, which, however, never are vertical. The lamels 

 are smooth or feebly zonated. The colour is a sallowish violet- 

 grey, but a rather dark violet in the lower part of a peripherical 

 portion occasionally not clinging to the substratum. 



I have not seen certain Organs of propagation, but I found a 

 few emptied conceptacles, that probably are those of sporangia. 

 They seem to have been hemispherical, the peripherical portion of 

 the roof not falling away, as in L. Lenormandi, and when emptied 

 rather resembling those in f. typica of the last named .species but 

 smaller, or about 200 p. in diameter. 



Relation to other species. It seems to be nearly connected 

 with certain forms of L. cristatum (Menegh.) and it, perhaps, 

 may prove to be only a form of the latter, a species that I have 

 not seen. However, it differs by its apparently smaller and more 

 horizontal lamels, which are never vertically raised as frequently 

 in that species, or if raised the upper portion always bends over 

 a subjacent lamel or bends downwards, and the surface of the 

 latter is smoother. Besides, the conceptacles of sporangia appear 

 to be different. 



Habitat. According to the kind communication af Cand. real. 

 P. B o y e, the finder of the species, it grows in the lower part of 

 the litoral region, and, as it seems, in quiet bays. Specimens- 

 taken in July bear newly emptied conceptacles (of sporangia?). 



Occurrence. The inner Stensund at Sulen in Sogn, on the 

 western coast (Bo ye). 



