vol.i] Setchell-Gardner. — Algce of Northwestern America. 351 



Prionitis Lyallii f. lanceolata Harvey. 

 Esquimalt, B. C, Harvey (1862, p. 173). 



Prionitis Lyallii f. ornata Harvey. 



Esquimalt, B. C, Harvey (1862, p. 173) ; west coast of Whid- 

 bey Island, Wash., X.L.G., No. 638!, and in Collins, Holden and 

 Setchell. P. B.-A., No. 949! 



The specimen distributed corresponds fairly well to the 

 description of Harvey, except that it is much more branched and 

 of firmer texture. Miss Til den has distributed a scrap under No. 

 204 of her American Alga? which may belong here. It came from 

 Port Orchard, Kitsap County, Wash. 



Prionitis Lyallii f. normalis Harvey. 



Esquimalt, B. C, Harvey (1862, p. 173); Peun's Cove, near 

 Coupeville, east coast of Whidbey Island, Wash., N.L.G., No. 

 6o!: near Seattle, Wash., Tilden, No. 302!, under Farlowia 

 compressa. 



We have been able to examine a cotype of this form in Herb . 

 Farlow and can refer the specimens quoted above with confidence. 



Prionitis Lyallii f. gladiata Setchell. 



Port Renfrew. B. C, Butler and Polley, No. 75. 



Prionitis Lyallii f. densissima Harvey. 



On rocks in tide pools, upper literal zone. Esquimalt, B. C, 

 Harvey] (1862, p. 174). X.L.G., No. 639!, and in Collins, 

 Holden and Setchell, P. B.-A., No. 948! ; Port Renfrew, B. C, 

 Butler and Polley, No.. 119!; Fairhaven, Wash.., N.L.G., No. 

 78! ; Whidbey Island, Wash., A. L.G.I; San Juan Island, Wash., 

 Tilden, No. 303!, under Prionitis lanceolata. 



These plants agree well with a specimen from Harvey in 

 Herb. Farlow. 



Prionitis Lyallii f. intermedia Harvey. 

 Esquimalt, B. C, Harvey (1862, p. 174). 



Prionitis Lyallii f. dilatata Harvey. 



Esquimalt, B. C, Harvey (1862, p. 174). 



