( 363 ) 
Distribution: Santa Barbara County southward to northern 
Lower California. Upper Sonoran. 
Specimens examined: Griffens, Elmer 3876; Ten Sycamore 
Flat, Sespe Creek, Abrams &F McGregor 137; Haven’s ranch, near 
El Nido, Abrams 3544. 
BRASSICACEAE. Mustarp Famity. 
1. LEPIDIUM. PEpperecrass. 
1. Lepip1um Fremonti S. Wats. Bot. King. Exped. 30, ol. 4, 
Fie) Le7es 
Type locality: “(Gathered by Fremont on the Mohave River in 
1844, and now collected on sandy foothills near Humboldt Sink.” 
Distribution: Nevada and Utah south to Arizona and the 
Mohave Desert of southern California, where it is common in the 
juniper belt. Upper and Lower Sonoran. 
Specimens examined: Desert slopes of the Tehachapi Mountains, 
near Willow Springs, Abrams &§ McGregor 415; between Tehachapi 
and Mohave, Abrams &§ McGregor 502; Randsburg, Heller 7670a. 
CAPPARIDACEAE. Caper Famity. 
1. ISOMERIS. BLappErpop. 
Capsule strongly inflated. 
Capsule attenuate at base. 1. I. arborea. 
Capsule globose, not attenuate at base. 1a. I. arborea globosa. 
Capsule scarcely inflated, oblong, attenuate at both ends. 
1b. I. arborea angustata. 
1. IsomMERIS ARBOREA Nutt. Torr. & Gray, Fl. N. Am. 1: 124. 
1838. 
Cleome Isomeris Greene, Pittonia 1: 200. 1888. 
Type locality: ‘St. Diego.” 
Distribution: Vicinity of Mount Pinos southward, especially on 
the margins of the deserts, to Lower California. On the coast 
slope it is common about San Diego and occurs on the bluffs along 
the sea as far northward as Playa del Rey, near Santa Monica. 
Specimens examined: Griffens, Lockwood Valley, Elmer 3888; 
Playa del Rey, Abrams 2509; La Jolla, Chandler 5002; San Diego, 
Dunn, March 17, 1891; Susan G. Stokes, June 4, 1895; Abrams 
3524. 
