268 Universiiij of Californin I'liblications. (botaxv 



a inanuscript uame. Tlu^ species is coiniuoii on exposed points 

 in the vicinity of Monterey, where it lias been collected by nura- 

 erons botanists. The name, as given above, was first published 

 and the species was first described by Miss Tilden in lier Ameri- 

 can Alg-» (Century IV, 1900). A full description and figures 

 have been given l)y MacMillau (1900). The blades are of two 

 sorts, the sterile being narrow and with a distinct niidril). whih^ 

 the fertile are broader, plane, and gladiate. On account of this 

 very marked dimor]diism, Reinke (1903) has just made it the type 

 of a new genus which he has named Lessoniopsis. 



Postelsia palmaeformis Ruprecht. 



On rocks on exposed points. Strait of .Juan de Fuca, B. C, 

 MacMi]]((ii (1902, p. 213). 



This locality marks the most northern limit of this species, 

 which ranges south from this point to Point Sur on the coast of 

 California. It is locally known as the "Sea Palm," and is to be 

 found in small forests or groves, at or near high water mark 

 where the waves are strongest. 



Nereocystis Luetkeana (Mertens) P. & R. 



On stones, in the sublitoral zone, reaching its full develop- 

 ment in 10-12 fathoms of water. Plentiful in the attached con- 

 dition , from the Shumagin Islands to the region of Santa Barbara 

 Channel on the coast of California. Shumagin Islands, Alaska, 

 iSdxtidfrs (1901, p. 431, under Nereocysfh Priapiis) ; Uyak Bay, 

 Kadiak Island, Alaska, ^^ .A.S. and A.A.L., No. 5093! ; Yakutat 

 Bay, Alaska, Bfr. Alhiii JoJnisori, No. 5720! ; Esquimalt, B. C. 

 Harvey (1862, p. 164); Port Renfrew, B. C, Bttthr aiul Po/h,/, 

 No. 39; west coast of Whidbey Island, Wash., X.L.G., No. 686! ; 

 Port Orchard, Kitsap County, Wash., Tilden, No. 237! 



The distril)ution of this species extends from the neighbor- 

 hood of Point Conception, on the coast of Southern California. 

 to the Shumagin Islands on the coast of Alaska. Beyond tliis 

 point, it seems very unlikely that the species is to be found 

 attached. It is. however, found cast ashore or floating. It 

 comes ashore si)aringly on the shores of the Bay of Unalaska, 

 where one of ns found it in the summer of 1899. It is found 

 floating in masses of several acres in extent in the Bering Sea uj) 



