Vol.1] SeicJicII-GdnJ Dfr . — AJ(/<(' of JS^oriJiiresfer)! Awprira. ^03 



Gigartina radula t. microphylla (Harvey) Setcliell. 



Floating. West shore of Wliidbey Island, Wash., K.L.G., 

 No. 64! 



This i)lant seems to correspond to Harvey's G. mirropJiylla, 

 which one of ns (cf. k^etchell, in Collins, Holden and Setchell, 

 P. B.-A,, No. XIX, 1899), has already reduced to a form of G. 

 radnhi. 



Gigartina radula f. exasperata (Harvey and Bailey) Setchell. 



On rocks, lower litoral and upper sul)litoral zones. W^est 

 coast of Whidbey Island, Wash., N.L.G., Nos. 108!, 10-1!, 105!, 

 170! , 17'2! , 178! , 174! . 2S2! ; Channel Rocks, near Port Orchard, 

 Kitsap County, Wash., TiUleii, No. 327!, under G. spiiwsa; 

 Tracyton, Kitsap County, Wash., Tihlen, No. 218!; opposite 

 Fort Nisqually, Pierce County. Wash.. H((rrHj <md Bailey (1851, 

 \). 371, under G. exasppraid) , lidihi/ (tud Harvey (1862, p. 162, 

 under G. exasperata) . 



The Gkjarihia cxasjxraiti Harvey and Bailey (1851, p. 162, 

 1)1. 5) was founded on the young tetrasporic plant which is more 

 thin and more ample than the adult. The adult cystocarpic plant 

 of this species is decidedly thick and takes on the form described by 

 Kuetziug as Mastocarpu^ eorynihiferiis {1H61 , \)l. 46) and is well 

 re])resented l»y the specimen (in our copy) iinder No. 327 of 

 Tilden's American Alg'a\ The morphology and histology have 

 been described by Olsen (1899) and l)y Humphrey (1901). 

 Turner's figure (1808, pi. 25) of Fucks hrarteains, credited to 

 the coast of Northwestern America, represents a i)lant inter- 

 mediate between the type and this form. The young plaut of 

 this form is often a very large plant, a meter or two long and 

 broad in i)roportion. As it matures it seems to become smaller 

 and thicker. These observations were made principally on the 

 coast of California, where this form is found in abundance. 



Erythrophyllum delesserioides J. Agardh. 



On rocks in the upi)er sublitoral zone. Vancouver Island, 

 B. C, Wood in Herb. J. E. Gray (Me J. G. Agardh, 1870, p. 11) ; 

 Port Renfrew, B. C, Tilden, No. 505!, Builer and Polley, No. 2. 



