Canon Fork of San Antonio C'anon, is deposited in tlie I'oniona 



Collcc[c Tlerharinin. 



Eriogonum umbellatum i iin-. \,ir. minus h ihnsti ni, \ ar. ii(i\-. 



A low suhalpine ])orcnnial ; i)C(hniclcs l-Iy^ cm. hij,di, Ijear- 

 inj;- simple l-«^ ra}"ed umbels; rays 4-9 mm. long; leaf blade liroad- 

 ly ovate, 2-6 mm. long; jx-tioles very sbort, never over 4mm. 

 long; a dense permanent \ello\vish tomentum on leaves, stems 

 and bracts. 



The plant here described is an extreme and noteworthy vari- 

 ation of E. nmbcUatum resulting from great exposure. It is very 

 abundant at the type station on the summit of Mt. San Antonio 

 (Old r>aldy), and is found in a somewhat larger form on the 

 other higli i^eaks of the San Antonio ^^Its. In the San Antonio 

 jNlts. it ranges throughout the Canadian Zone and is usually found 

 on exposed ridges above 8000 ft. alt. The typical plant on the 

 other hand is confined to the Transition Zone ranging from 6000- 

 8000 ft. alt. and always growing in unexposed situations. 



The type, our Xo. 1692, collected on the exact summit of Mt. 

 San Antonio, alt. 10.080 ft., on Aug. 22, 1917, is deposited in the 

 author's herbarium'. 



A FEW NOTES ON THE BOTANY OF SOUTHERN 



CALIFORNIA. 



By I. M. Johnston. 



Gymnogrammc triangularis Kaulf, var. viscosa Eaton. — 

 Grownng with the typical form on shaded slopes in the San Joa- 

 quin Hills, back of Laguna Beach, May 4, 1918, Johnston ig26, 



Notholacna californica Maxon. — Quite common in dry rocky 

 ground in Temescal Canyon (between Corona and Elsinore), 

 April 27 and 'Mzy 30, 1918, Johnston 1864, ippj. 



Potamogeton crispus L. — A^ery abundant in still and run- 

 ning water along the Santa Ana River northwest of Corona. 

 Dec. 1, 1917, Johnston. 



Andropogon glomeratus (Walt.) B. S. P. — In a swamp on 

 the San Joaquin Ranch, Orange County, Mrs. C. B. Bradshazv. 



Chaetocliloa vcrticillata (L.) Scrib. — A roadside weed near 

 Upland, Aug. 2. 1917. Johnston i6^g. Identified by Mrs. Agnes 

 Chase. 



Bromiis arenarins Labill. — \Vell established and abundant at 

 Red Hill, a mesa near Upland, ]\Iay 5, 1917, Johnston 1211. 



Areitaria serpyllifolia L. — W'ell established in a lawn at 

 Claremont, April 25, 1918, Johnston 1978. 



Spergularia rubra, J. & C. Presl. — At roadsides and espe- 

 cially along the railroads at Upland, Ontario, Claremont, Pomona 

 and La Verne. \'ery common and well established. Johnston 

 iiy, 2006. 



64 



