1922] Gardner: The Genus Fucus on the Pacific Coast 51 



delimited, mostly complanate, simple or bifurcate, blunt to acuminate, 

 apices slightly laterally reflexed, 2^1 cm. long ; conceptacles numerous, 

 conspicuous. 



Growing on rock ledges in the lower littoral belt. Yakutat Bay, 

 Alaska. 



Kev. Albin Johnson, no. 5719 (Herb. Univ. Calif., nos. 99103, 

 99104). Yakutat Bay, Alaska. 



Kjellman, loc. tit.; De-Toni, Syll. Alg., 1895, p. 202; Setchell and 

 Gardner, Alg. N.W. Amer., 1903, p. 283 (in part). 



This form was first discovered on Bering Island and described 

 by Kjellman (loc. tit.). Comparison with a photograph of the type 

 (cf. plate 55) and with a small portion of the type specimen seems 

 to make it fairly certain that the two specimens collected by Albin 

 Johnson, and cited above, are correctly placed, although they are much 

 larger in all parts than Kjellman 's description calls for. More 

 study of material in the northern waters is highly desirable to make 

 certain this determination. In neither the type nor the other material 

 referred to is the cornute habit very pronounced. 



Fucus evanescens f. typicus Kjellm. 

 Plate 56 



"F. evanescentis forma antecedente minor, thallo 5-10 mm. lato, 

 coriaceo, dichotomo, segmentis elongatis, costa plus minus prominente, 

 receptaculis vulgo complanatis et dichotomis, segmentis obovatis. " 



"Forma inter omnes vulgatissima per totam oram occidentalem et 

 septemtrionalem Insulae Vestspetsbergen in fundo vulgo 2-5 orgyali. " 



Kjellman. Om Spets. Thall., II, 1877a, p. 3. 



Fronds 15-25 cm. high, coriaceous, dichotomous, dark brown ; seg- 

 ments euneate to sublinear, midrib moderately distinct, percurrent, 

 eryptostomata few, small; receptacles mostly complanate, deeply 

 furcate, segments obovate to linear-acuminate. 



Growing on rocks in the upper littoral region. Harvester and 

 Kakiak Islands. Alaska. 



Setchell and Lawson, no. 5122. (Herb. Univ. Calif., no. 99136), 

 Harvester Island, Uyak Bay, Alaska; Rigg, no. 100, Kadiak Island, 

 Alaska. 



Kjellman, loc cit. ; Setchell and Gardner, Alg. N.W. Amer., 1903, 

 p. 282. 



Kjellman 's type specimen of this form is illustraed on plate 56, 

 and represents a plant considerably smaller than the plants which I 



