258 University of California Piiblications in Botany [Vol. 8 



12. Enteromorpha torta (Mert.) Reinb. 



Frond small, 1-3 cm. long, filiform, simple or with occasional 

 proliferations consisting of two rows of cells ; cells rectangular, always 

 in longitudinal series throughout the filaments and more or less in 

 cross series ; chromatophore thin, covering the greater part of the cell. 



Growing attached to rocks, in shallow pools in the upper littoral 

 belt. San Diego, California. December. 



Reinbold, Rev. Juergens' Alg. aquat., 1893, p. 201 (p. 14, Repr.). 

 Conferv<i torta Mertens, msc, in Juergens, Dec. 13, no. 6. 



We are inclined to refer here a slender plant from San Diego, 

 California, collected by one of us (Gardner, no. 3574) although it 

 shows no branches in any of the samples we have examined. It agrees 

 fairly closely with the unbranched plants in the specimen distributed 

 by Reinbold under no. 624 of the Phykotheka Universalis. Our plant 

 may possibly be a short, capillary form of E. tuhulosa, with cells more 

 regularly arranged in longitudinal rows. 



13. Enteromorpha crinita (Roth) J. Ag. 



Frond filiform, cylindrical or compressed, much and repeatedly 

 branched, the branches tapering towards the tips, the smallest, as 

 well as the tips of the larger, usually of a single series of quite short 

 cells; cells almost always in longitudinal series, often rounded, quite 

 or nearly filled by the chromatophore. 



Growing on wood or floating in the littoral belt. From Alaska 

 (Valdes) to California (San Diego). 



J. G. Agardh, Till Alg. Syst., part 3, 1883, p. 144; Collins, Green 

 Alg. N. A., 1909, p. 199, Mar. Alg. Vancouver Is., 1913, p. 101; 

 Saunders, Alg. Harriman Exp., 1901, p. 412 ; Setchell and Gardner, 

 Alg. N.W. Amer., 1903, p. 214; Collins, Holden and Setchell, Phyc. 

 Bor.-Amer. (Exsicc), no. 965. Enteromorpha compressa f, com- 

 planata Tilden, Amer. Alg. (Exsicc), no. 265 (not of J. G. Agardh). 

 Enteromorpha prolifera Tilden, Amer. Alg. (Exsicc), no. 385 (not 

 of J. G. Agardh). Conferva crinita Roth, Cat. Bot., 1797, I, p. 162, 

 pi. 1, f. 3. 



Enteromorpha crinita is usually a slender, much branched plant, 

 with tapering branches of several orders, the tips of the branches 

 ending in a single series of cells. The chromatophore, as seen in surface 

 view, seems to fill the cell and thereby distinguishes this species from 



