^2)2 Mnhlenbergia, Volume 2 



thickets. Some of the plants exhibit acheiies just like the ones 

 figured in the Pacific Railway Report, while others have five 

 slender awns as long as the achene itself. There are no ray flow- 

 ers. The type was collected by Bigelow on "hill-sides in the 

 Napa Valley, California; April 25." The name exilis was first 

 applied to this plant, but must give way to the later one of 

 Greene on account of the Pentachaeta exilis Gray. 



GNAPHALIACEAE Greene, Fl. Franc. 358. 1897. 

 Gnaphalodes CALiFORNiCA (F. & M.) Greene 



No. 8595, collected May 30, at Smith Creek, Santa Clara 

 county, elevation 2150 feet, on dry grassy slopes about thicket?. 

 Its usual habitat is grassy slopes in gravelly soil. 



PARTHENIACEAE Link, Handb. 1: 816. 1829. 



iyHelianthaceae Pfeiff. Nomencl. Bot. 1: 1579. 1874.) 



Heuanthella CALIFORNICA Grav, Pac. R. R. Rep. 4: 103. 



1857- 

 No. 8522, collected May 10, near Smith Creek, Santa Clara 

 county, elevation 2200 feet, on a thinly wooded slope growing 

 about oak and pine trees and undershrubs, just coming into 

 flower. The type was collected by Bigelow in "Napa Valley, 

 California, on hillsides; x\pril." Greene reported it from Mt. 

 Hamilton in Erythea 1: 90. 1893, but in F'l. Fran. 410. 1897, 

 mentions it from as far south only as Contra Costa county, as 

 does Jepson also in his Flora. 



MADIACEAE Greene, Fl. Fran. 356. 1897. 

 Harpaecarphus exiguus (Smith) Gray 



No. 8593, collected May 30, at Smith Creek, Santa Clara 

 county, in dry ground on the edge of a thicket, the plants small, 

 six inches or less. An exceedingly variable plant as to size, 

 ranging from an inch or two in thin gravelly soil to nearly two 

 feet in rich loose soil. It is commonly found on the borders of 

 woods or thickets. 



