Vol.. 1] iSefchell-GdnJilP)-. — Alga' of Xorthiresiern America. 883 



Odonthalia Aleutica (Agardli) J. Agardh. 



On rocks and alg'a^ in the lower lit oral and nipper sublitoral 

 zones. Unalaska, Alaska, C. A. Agardh (1820, pi. 3, under Bho- 

 (lomela Aleutica) \ Shnniagin Islands, Alaska, Sautaleri< [\90\. \). 

 488); St. Paul, Kadiak Island, Alaska, ir..4..y. and A.A.L., 

 No. 5150!; Victoria, B. C, Tihlen, No. 315!, nnder Rhodomda 

 floccosa form 1)); Esqnimalt, B. C, Tilde n, No. 814! under 

 Khodovicla floccosa; west coast of Whidbey Island, Wash., 

 N.L.G., Nos. 16!, 92! 



This species is probably not uncommon along onr northwest- 

 ern coast from the Strait of Juan de Fuca to Unalaska. It is 

 probably often confused with the next, but it is to be distin- 

 guished from it by the fact that the tetrasporic and cystocarpic 

 branches are not shortened or collected into a glomerule, but are 

 in a loose raceme. It is to be distinguished from coarser forms 

 of the last species by its distichous brauchlets. 



Odonthalia floccosa (Esper) Falkenberg. 



Unalaska and Sitka, Alaska, Pastels and Rnpreclit (1810, 

 p. 14); Sannak Island, Alaska, Turner (1886, p. 85): Popof 

 Island. Knkak Bay, Yakutat Ba.y, Sitka, Wrangell, and Annette 

 Island, Alaska, Saunders (1901. p. 448); Strait of Juan de Fuca 

 and Point Roberts, B. C, Harreu (1862, p. 167). 



There has l)een much confusion in the specimens referred to 

 this species. Postels and Rnprecht (1840, p. 14) include the 

 preceding species and Fucus pilu lifer Turner, l)()th of which 

 seem to us distinct. It has been confused with forms of RJtodontehi 

 Lycopodioides, etc., until it is difificult to determine from the 

 references whether they refer to the species as Falkenberg has 

 defined it or not. We have, therefore, given the references 

 above without comment. We have found three forms standing 

 out fairly distinctly from the mass of forms, viz. — f. typica, f. 

 comosa, and f. macracaiitJai, and have noted them below. 



Odonthalia floccosa f. typica Setchell and Gardner nom. nox . 



The typical form is represented by Esper (1802, pi. 180) and 



rather better by Turner (1808, i)l. 8), under the name of Fucus 



floceosiis. The type came from Port Trinidad, California, 



