310 University of California Puhlications in Botany [Vol. 9 



1. HESPEROCHIEON 



Branches of the style erect. 



Corolla campanulate, with a distinct tube 1. H. californicus 



Corolla rotate, nearly divided to the base 2. H. pumilus 



Branches of the style spreading 3. H. campanulatus 



1. Hesperochiron californicus var. latifolius Brand., Univ. Calif. 



Publ. Bot., vol. 4, p. 226. 1912. 



H. latifolius Kellogg, Proc. Calif. Acad., vol. 5, p. 44. 1875. 



Type locality. — ' ' On the alluvial banks of the Yuba River, subject 

 to annual overflow, damp, sandy, and grassy plots at Cisco, C. P. R.R., 

 Sierra Nevada Mountains, at an altitude of 6,000 feet. ' ' 



Range. — Central Sierra Nevada. 



Z&ne. — Upper Transition and lower Canadian. 



Specimens examined. — South Fork of Yuba Canon, Placer County, 

 Mrs. C. C. Hall 8747 ; Cisco, Dr. A. Kellogg, June 19, 1870. 



The typical form of this species, described by Bentham from a 

 collection made by Hartweg "In uliginosis in montibus Sacramento" 

 (Ourisia Calif ornica Benth., PI. Hartw., p. 327. 1849), has leaves 

 slightly narrower and the peduncles glabrous. This variety is doubt- 

 fully distinct with somewhat broader leaves and peduncles pubescent. 



2. Hesperochiron pumilus Porter, in Hayden, Geol. Rep., p. 768. 



1872. 

 Villarsia pumila Dougl., in Hook., Fl. Bor. Am., vol. 2, p. 70. 1838. 



Type locality. — Not definitely given. 



Range. — Washington to Wj'oming, south to California and Nevada. 



Zone. — Arid Transition and Canadian. 



Specimeiis examined.- — -Trail from Snow Creek to the Tioga Road, 

 in damp swales, 7,800 feet. Smiley 674; Cloud's Rest Trail, Yosemite, 

 7,400 feet. Smiley 501; Glacier Point, Yosemite, 7,300 feet, Hall 

 9138.* 



Dr. Greene considered our Sierran plant to be distinct from the 

 common form of the north end of the Great Basin and described it 

 as Capnorea ciliata (Pitt., vol. 5, p. 44. 1902). Brand (Univ. Calif. 

 Publ. Bot., vol. 4, p. 227. 1912) has reduced this proposed species 

 to varietal rank, the critical difference being the somewhat smaller 

 size of the flower. If future study should justify this segregation, 



* It is of some interest to note that this specimen was determined by Dr. Brand 

 as belonging to the typical form sometime before his paper appeared (Brand, 

 l.o. ) containing the statement ' ' Die typische Form f ehlt auf der Sierra. ' ' 



