366 University of California Publications. [botany 



Coral Una, but they seem to belong to a species of Choreonema. 

 The Cheilosporum maximum Yendo (1902a, p. 22, pi. 2, f. 18, 19, 



pi. 6, f. 9) seems but a more strongly calcified state of this form, 

 such as we have collected at Monterey, California. 



Corallina officinalis f. pilulifera (P. & R.) Setchell and 



Gardner comb. nov. 



On rocks in the sublitoral zone. St. Paul Island, Alaska, 

 Greeley and S nod grass, No. 5805a!; Uualaska, Alaska, Postels 

 and Ruprecht (1840, p. 20, under Corallina pilulifera) ; east shore 

 of Amaknak Island, Bay of Unalaska, Alaska, W.A.S. and 

 A.A.L., No. 4078! ; Shumagiu Islands, Alaska, Saunders (1901, 

 ]i. 442, under Corallina arbuscula) ; Prince William Sound, 

 Alaska, Saunders (1901, p. 442, under Corallina pilulifera 

 filiform is) . 



A dwarf form including the Corallina arbuscula and G. 

 pilulifera of Postels and Ruprecht. It forms a transition from 

 f . Chileusis to the next, because in some cases there may be found 

 more than two branchlets springing from one joint. The cristate 

 joints prolonged into filiform prolongations are more or less 

 common on the plants examined. The Corallina pilulifera of 

 Kuetzing (1858, pi. 64, I) may prove to be a different species. 

 The Arthrocardia frondescens of Setchell (1899, p. 595) was 

 based on a few fragments of the /. filiformis of Ruprecht and was 

 recognized later when more perfect material was disco verd among 

 the Greeley and Snodgrass collections. 



Corallina officinalis f. multiramosa Setchell and Gardner 



nom. nov. 



In the lowermost portion of the literal zone and on the edges 

 of tide pools farther up, growing on rocks. Uyak Bay, Kadiak 

 Island, Alaska, ir..4.»S'. and A.A.L., No. 5129!; Esquimau, B. 

 C, K.L.G., No. 919!; Port Renfrew, B. C, Yendo (1902, p. 

 719, under Corallina Vancouveriensis) ; west coast of Whidbey 

 Island, Wash., N.L.C., No. 79! 



This form is distinguished, as Yendo has pointed out (1902, 

 p. 712, under Corallina Vancouveriensis) , by having more than 

 two branchlets springing from an articulus the rule, thus giving 

 the plants a distinct habit. This happens to some extent in the 



