334 University of California Publications. [botany 



according to Turner, who sent Esper his specimens, although 

 the latter represents them as having been brought from Nootka 

 Sound, B. C, by Cook. They were collected by Menzies accord- 

 ing to Turner. This form is a slender form of the more southern 

 waters, and we have not seen any characteristic specimens of it 

 from our territory. No. 313 of Tilden's American Alga?, from 

 San Juan Island, Wash., may represent this form, but the 

 specimen is not very complete. Kuetzing's figure of Lophura 

 floccosa (1865, pi. 38, c-e) may be of this form, but it is transi- 

 tional to f. macracamtha. Fucus pilulifer of Turner (1819, pi. 

 236) seems to us not to be of this species, but probably a much 

 battered plant of 0. Aleutica. It was collected at Nootka Sound, 

 B. C, by Menzies. 



Odonthalia floccosa f. comosa Setchell and Gardner f. nov. 

 Plate 27. 



A luxuriant form, near f. typica, but with the branchlets 

 more numerous, longer, slender and recurved so as to give a 

 compact, shaggy appearance to the whole plant. The collecting 

 of the stichidia and cystocarpic branchlets into compact heads 

 with involucre-like outer branchlets characteristic of the species, 

 reaches its extreme in this form as may be seeu from the figures 

 on Plate 27. The distichous arrangement of the branchlets is to 

 be seen plainly only at the very tip, and even there is often 

 obscure, especially in dried specimens. 



On exposed rocks in the litoral zone. Agattu Island, Alaska, 

 Townsend, No. 5760! ; west shore of Amaknak Island, Bay of 

 Unalaska, Alaska, W.A.tf. aiufA.A.L., No. 3255! ; near Iliuliuk, 

 Unalaska, Alaska, W.A.8. and A.A.L., No. 4037!; Uyak Bay, 

 Kadiak Island, Alaska, W.A.S. and A.A.L., No. 5090!; Port 

 Renfrew, B. C, Butler and Polley) ; west coast of Whidbey 

 Island, Wash., X.L.G., Nos. 29!, 96! 



This form is sufficiently distinct in appearance to be told at a 

 glance, but it is really only a more luxuriant form of the typical 

 condition. It seems to be confused at times with Rhodomela 

 Larix, but is distichous in its scheme of branchlets, less coarse 

 and less rigid. 



