and the consequent destruction of the small organisms therein 

 by sewage and other means is worthy of attention. 



The "plankton" flora, which consists largely of small float- 

 ing organisms, at various depths, but usually near the surface, 

 forms a considerable part of the food of some of the fishes. 

 Diatoms form the principal part of this pelagic flora, and are 

 quite sensitive to various foreign substances in the sea water. 

 Because of the inter-relation of these small organisms and the 

 food animals such as fish, attention should be given to their 

 conservation. 



The author wishes to announce work in progress along 

 these lines, to be published when terminated. 



VENICE MARINE BIOLOGICAL STATION, 

 UNIVERSITY OF SOUTHERN CALIFORNIA. 



NOTES ON SOUTHERN CALIFORNIA FLORA 

 Anstruther Davidson, C. M., M. D. 



Salix mackenziana Hook. — "High Alts. Sierra Nevada 

 (Mariposa and Calaveras Co.), Lake Co. and far northw'ard, 

 apparently rare in California." (Jepson's Flora of California.) 



This is not uncommon on Bishop Creek, Inyo Co., 900O to 

 ICOOO alt. 



Lilium kelleyanum Lemmon — The only reported station 

 for this is Bubbs Creek, where it was found by Lemmon and by 

 him described. The description given is very meagre. One 

 plant of what is probably this species was found near Andrews 

 camp. It closely resembles Parry's lily in shape and markings, 

 but is about one-quarter smaller, and the stamens and fila- 

 ments are very short ; the latter one the stamens three lines 

 long. 



Phacelia eisenii Brandegee. — This species common in the 

 Sequoia National Park is represented by a dwarfish form on 

 the eastern slope of the range. 



Gilia stansburyii Heller — Common on Bishop Creek. 



Gilia brev^^eri Greene — Not infrequent in wet ground near 

 snow line on Bishop Creek. Death valley is the only other re- 

 ported station south of Truckee and Nevada Counties. 



Draba breweri \A'ats— "Mt. Dana 12000 ft. White Mts. 

 13000 ft." (Synoptical Flora.) This is (|uite abundant at S. 

 Lake, Inyo Co"'., about 10000 ft. 



Arabis inamoena Greene — Fairly abundant on south fork 

 Bishop Creek. 



Arabis davidsonii Greene — More common on the borders 

 of South Lake than in its original station on the north fork 



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