44 ERYTHEA. 



portions of the rhachis. Both the smooth and the rough 

 forms have been found at Port Harford by the writer and by 

 Dr. Anderson at Santa Cruz, but the smooth form is not so 

 well developed as it is below Point Conception. Careful 

 search about San Pedro failed to discover any trace of the 

 rough form and no smooth forms have been found by the 

 writer about San Francisco, although Egregias are abundant 

 in both localities. 



The rough variety is the one figured and described by 

 Euprecht (Mem. Acad. St. Petersb., 7; 71, PI. 4; 1852) and 

 described by J. G. Agardli (Species Algarum, 1; 254, 1848, 

 under Phyllospora Menziesii and P. Chamissoi), and seems 

 also to have been the one originally described by Turner 

 (Hist. Fucorum, PL 27, 1808) for he says " rough all over both 

 to the touch and sight with minute black tubercles." It conse- 

 quently seems best to the writer to distinguish the smooth 

 form as a separate species under the name of Egregia laevi- 

 gata, distinguished from E. Menziesii by its smooth rhachis 

 and by its sporophylls varying from simple and entire to pin- 

 nately decompound, with bristle-shaped divisions. The writer 

 hopes to publish a more detailed account of these two species 

 and their variations at some future time. 



Macrocystis jpyrifera (Turn.) Ag., the "great-kelp" of 

 the Californian coast, is very variable indeed but most writers 

 agree with Hooker in recognizing but one species. Ares- 

 choug, however, recognizes a second species from the coasts 

 of Chile and Peru, the M. angustifolia Bory (Obs. Phyc, Part. 

 4, p. 22, 1883), distinguished by its creeping rhizome from 

 which both roots and stems are given off. The writer finds 

 on examining the roots of the common Californian species, 

 that the older specimens possess rhizomes of considerable 

 length which give rise to both stems and roots and it may be 

 that even this character may be common to all older speci- 

 mens of MacrocysUs. 



Laminaria Sinclair ii (Harv.) Farlow was first published in 

 connection with the specimen but without description in 

 Farlow, Eaton, and Anderson's Algte Exsiccatse Americse 

 Borealis (Fasc. 3, No. 118, 1878) where the Lessonia Sin- 

 clairii Harv. is quoted as a synonym. This name used by 



