52 



M. FosHe. 



his spedes as being identical with H a r v e y's Callitliamnion 

 virgatulum "Phjc. Brit.t. 313. K j e U m a n, however, records 

 it as a distlnct form, f. Farlowii, and he says: «The two 

 figures (F a r 1 w's and Harve y's) are very different from 

 each other, so as to make the impression that the two authors 

 by one and the same name have meant specifieally distinct 



1 



algæ». ^ 



Having seen a considerable number of this species at 

 East-Finmarken as" well as at West-Finmarken I must agree 

 with F a ri w considering his I. virgatul-a to be so nearly 

 related to C. virgafulum Harv. that, as far as I canjudge, 

 it cannot even be maintained as a distinct form. The essen- 

 tial difference between the two flgures is, according to my 

 apprehension, that Harvey's plant is wanting the rather 

 numerons and long hairs, but, on the contrary, bears nume- 

 rous short branches, consisting as it seems of a single cell. 

 These are, on the other hand, proportionally few onthespe- 

 cimen figured by F a r 1 o w, and still fewer on K ii t z i n g's 

 fignre. At Finmarken I have met with specimens bearing 

 " numerous secondary branches consisting of 1—3 cells, though 

 not as numerous as on fig. 3 by H a r v e y. By other ones 

 these branches are almost wanting, the plant being sporife- 

 rous or not. And thus too with regard to the hairs. By 

 some specimens these appear rather abundant, by others 

 q_uite wanting, in which case the plant almost fuUy is cor- 

 responding with fig. 3-4 by Harvey.^ The figures in 

 Phyc. Brit. are drawn from a richly sporiferous specimen, 

 and, therefore, I suppose it to be likely that some of the ap- 

 parently secondary branches on fig. 2 have been spores or 

 such organs in development. 



Harvey states that the species sometimes is difficult 

 to be distinguished from Oh. Baviesii. It is, in fact, rather 

 variable, but I never saw any transition between these two. 



ir*%ith reference to the division ot the spores cp. :^åg, ^cram. p. 170. 



