SOME NEW ALGÆ FROM JAPAN. 279 



Coilodesme bulligere Strömf. f. fucicola. f. n. 



= Coilodesme californica Kjellman (nee Ruprecht), 

 Beringhafvets Algflora, p. 48. — Id.: Adenocystis, p. 291, figs. 1 — 9. 



(Plate XIII. Figs. 10 and 11.) 



The present form is characterized by having a complanated 

 and smooth frond, slightly undulating on the margin, and always 

 epiphytic on other large algae. The inner parenchymatic cells 

 are generally 2 — 3 layered, while in the type they are mostly 

 single. 



Kjellman identified a Coilodesme collected at Behring Is- 

 land with Adenocystis californica Rupr., and transferred the latter 

 to the proper genus, as it is now generally called, Coilodesme 

 californica Kjellm. Upon examining, however, the original spe- 

 cimens in the Botanical Museum at Upsala, I found them quite 

 different from what Ruprecht thought. 



Tilden 1 distributed a plant, collected in Vancouver Island, 

 under the name Coilodesme californica Kjellm. Her specimens, 

 so far as I have seen, do not coincide with Ihe description and 

 figures of the species in Några til Slagtet Adenocystis, p. 291, 

 figs. 1—9. But incidentally, if I might be allowed to say so, they 

 accord satisfactorily with the original specimens of Adenocystis 

 californica Rupr., now in the Herbarium of the Academy of 

 Science in St. Petersburg. 



The relationship between Strömfelt's type and the present 

 form seems to be a variation of the form due to the habitat. 

 The first-named is always found on rocks, while the second, as 

 far as I know, is always epiphytic on other algæ. The facts that 

 in the Atlantic Ocean only the former occurs, and that in the 

 North Pacific both are found in the same locality, or at least 

 at no great distance apart, tempt me to regard the Atlantic form 

 as the typical, and the present form as a mere form of it. 



1 American Algæ, Century IV, No. 354. 



