vul. i] SetcJiell- Gardner. — Algce of Northwestern America. 291 



Alaska, A.A.L., No. 5047! ; Orea, Alaska, W.A.8. and A.A.L., 

 No. 5165!, Saunders, No. 259a! and 1901, p. 433, cited as from 

 "Prince William Sound"; west coast of Whidbey Island, Wash., 

 X.L.G., Xos. 47! , 199b! , 280! , 688! , and in Collins, Holden and 

 Setchell, P. B.-A., No. XLIX! 



P. amplissima is very variable as to size, habit and tint of 

 red. but it is always distromatic and has the antherozoids in four 

 tiers of four each in the antheridium, as Kjellman has figured 

 them (1883, pi. 18, f. 8). 



Porphyra miniata f. cuneiformis Setchell and Hus. 



On rocks, on wood, and on other alga?. Lowe Inlet, Alaska, 

 Saunders, No. 20!; Victoria, B. C, Tilden, No. 230!; west 

 coast of Whidbey Island, Wash., E.L.G., No. 199a!, iu Collins, 

 Holden and Setchell, P. B.-A., No. 929! ; Pleasant Beach, Kitsap 

 County, Wash., X.L.G., No. 348! 



This species is to be distinguished from the two following 

 very nearly related species, by its habit or color, being decidedly 

 darker red and rather thicker than the next, and larger and more 

 completely distromatic than P. abyssicola. 



Porphyra tenuissima (Stroemfelt) Setchell and Hus. 



On rocks and other alga?. Shumagin Islands, Alaska, 

 Saunders, No. 384!: Takutat Bay, Alaska, Saunders, No. 214!, 

 Rev. Albiii Johnson, No. 5705! 



Readily recognized, as a rule, by its thin, light red or pink, 

 distromatic frond. 



Porphyra abyssicola Kjellman. 



On Zostera. West coast of Whidbey Island, Wash. N.L.G., 

 273a! 



As stated above, this species is not very distinct from P. 

 mil, into f. cuneiformis, differing from that plant in its smaller 

 size and less distinctly or less completely distromatic frond. 



Porphyra variegata Kjellman. 



Found floating up from the sublitoral zone where it grows on 

 rocks. West coast of Whidbey Island, Wash., N.L.G., Nos. 

 177!, 179!, 279!, 687!, and in Collins, Holden and Setchell, 

 P. B.-A., No. 930! 



