Vol. ij SetcheU-GanlHcr. — Alga' of Northwesiern Americ((. 36o 



iiate branching and the more or less slender ta])ering branehlets. 

 We have not seen a specimen of this from onr territory. 



Corallina officinalis f. Chilensis (Decaisne) Knetzing. 



On rocks in the ni)per snblitoral and in deep pools in the 

 litoral zone. Port Renfrew, B. C, Yendo (1902, p. 71S). 



We have seen no specimens of the type of this form, as 

 represented by Kuetzing (1858, ])1. 66 f. I) from onr territory, bnt 

 it is not nncommon in various localities on the coast of California. 

 The very simple condition represented by Kuetzing and by Yendo 

 (1902, pi. 54, f. 1) is not so abundant as conditions with the 

 branches and l)ranchlets more numerous and passing into states 

 characteristic of the second and third forms below. It seems to 

 ns that it is to be distinguished from the preceding by its less 

 slender and less tapering branehlets. 



Corallina officinalis f. robusta Setchell and Gardner f . nov. 



The type of the present form is a i)lant of the Califoruian 

 coast which has been distributed under -199 of Collins, Holden 

 and Setchell's Phycotheca Boreali- Americana. It differs from 

 the forms just mentioned in being larger and stouter, the joints 

 being more inclined toward a triangular outline in the main 

 axes, while the pinnules and ultimate branehlets are more or 

 less flattened. The cystocarps and conceptacles are terminal on 

 longer or shorter branehlets, bnt at times the fertile branchlet is 

 so shoi't that it seems sessile on the joint, or upon a ])rojection 

 from it. 



In the upper sul)litoral zone and in tide pools in the litoral 

 zone . West coast of Wb idbey Island , Wash ., N.L.G., No . 278 ! 



As it occurs on the Califoruian coast, this form presents a 

 series of gradations to f. Chilensis, bnt, as it becomes condensed, 

 its aspect is sufficiently changed to give it the appearance of a 

 very distinct plant. We suspect from the figures and descrip- 

 tions of Yendo that it includes his Cheilosporinn MacMiUani 

 (Yendo, 1902, p. 718, \)\. 53, f. 4, 5, ])!. 56, f. 11-14) from Port 

 Renfrew, B.C. That agrees very well with the specimens from 

 Whidbey Island, except that in these we have not found any 

 cystocarps on the faces of the joints. We have seen such sti-uc- 

 tures on the faces of the joints of certain Califoruian forms of 



