(419 ) 
Distribution: On the desert slopes of the San Bernardino Moun- 
tains northward to the Tehachapi Mountains. Upper Sonoran. 
Specimens examined: Near Griffens, Lockwood Valley, Elmer 
3895; between Oakgrove Canyon, and Elizabeth Lake, Abrams & 
McGregor 4o5; Antelope Valley, Parish z955; north slope of the 
San Bernardino Mountains, S. B. & W. F. Parish 139; Gold 
Mountain, Abrams 2070; Sarin Valley, San Gabriel Moun- 
tains, brains &¥ McGregor 631; Acton, Davidson, July 4, 1892; 
Rock Creek, Davidson, July 4, 1893 
In addition to these four mainland species there is a fifth on 
the islands, Malacothamnus nesioticus (Robinson) = Malvasirum 
nesioticum Robinson, in A. Gray, Syn. FI. 1, pt. 1: 312. 1897. 
This species is intermediate between M. fasciculatus and M. Nut- 
tallit, having the leaf-outline of the latter, but with the upper 
surface green and nearly glabrous. 
3. HIBISCUS. Rose Matiow. 
1. Hisrscus penupatus Benth. Bot. Sulph. 7, pl. 3. 1844. 
Type locality: “Bay of Magdalena.” 
Distribution: Dry gravelly ravines and slopes of the Colorado 
Desert, extending southward into northern Lower California, 
and eastward to El Paso. Lower Sonoran 
Specimens examined: Signal Mountain, Colorado Desert, 
Abrams 3178, and Dec. 29, 1907; Palm Springs, Mrs. Hutchinson, 
April, 1910. 
STERCULIACEAE. Srercuria Famity. 
1. FREMONTODENDRON. Catirornia SLIPPERY ELM. 
1. FREMONTODENDRON CALIFoRNICUM (Torr.) Coville, Cont. Nat. 
erb. 4: 74. 1893. 
Fremontia californica Torr. Pl. Frem. 5, pl. 2. 1853. 
Chiranthodendron californicum Baill. Hist. Pl. 4: 70. 1873. 
Type locality: “Sources of the ee in the northern 
part of the Sierra Nevada of California.” 
Distribution: Western slope of the Sierra Nevada and the more 
interior parts of the Coast Ranges, from the vicinity of Mt. Shasta 
south to the Cuiamaca Mountains. Higher altitudes of the Upper 
Sonoran and the lower parts of the Transition. 
