232 University of California Publications. [botany 



Japan by DeToni (1895, p. 63), but No. 49 of Okamura's Alga? 

 Japonicse Exsiccata?, seems to us to be our G. Ritteri, though 

 labelled G. mamillosum. 



Codium mucronatum f. Californicum J. Agardh. 



On rocks aud in tide pools, lower literal and upper sublitoral 

 zones. Sitka, Alaska, J. G. Agardh (1886, p. 44), Saunders 

 (1901, p. 416); San Juan Harbor, Strait of Juan de Fuca, Van- 

 couver Island, B. C, Tilden, No. 281!, under C. tomentosuni; 

 Whidbey Island, Port Townsend, and Ludlow Bay, Wash., 

 N.L.G-A 



In all probability are to be included here, the specimens 

 referred to G. tomentosum as follows: — Norfolk Sound (Sitka 

 Si mud) and Nootka Sound, Postels and Ruprecht (1840, p. 20); 

 Nootka Sound, Turner (1811, p. 135, under Fucus tomentosus) ; 

 Esquimalt, B. C, Harvey (1862, p. 176). 



Codium mucronatum f. Nova; Zelandiae J. Agardh. 



Port Renfrew, B. C, Butler and Polley, No. 5! 



A careful study of C. mucronatum will probably show a very 

 decided variation in the size and occurrence of the mucronate tip 

 of the utricle. In the plants included under the preceding form, 

 all studied by us have the typical tip of the f. Californicum . In 

 the plant quoted under the present form, the mucronate tip to 

 the utricle is to be found only in the very young portions of the 

 frond. Below, in the older portions, the utricles are more or less 

 swollen at the tip, as in C. Muelleri Kuetzing, and while some of 

 them show a very slight apiculus, the majority of them do not. 

 The plant certainly differs from the more usual form on the 

 Pacific Coast of North America. 



Family VALONIACE^E. 



Valonia ovalis (Lyngbye) Agardh. 



On rocks exposed to the waves at extreme low water mark. 

 Port Renfrew, B. C, Butler and Polley, No. 26! 



This northern representative of a tropical genus was first 

 found on the Pacific Coast of North America by Saunders (1899, 

 p. 2) near Pacific Grove, California. It has also been collected 



