Southern Jewel-flower [Streptanthus campestris Wats.]

Southern Jewel-flower [Streptanthus campestris Wats.]

Listing CNPS List 1B R-E-D Code 2-1-2

Stat/Fed. Status -- None BRASSICACEAE May-Jul.

Global Rank G2 State Rank S2?

Distribution: San Diego County, Riverside County, San Bernardino County; Baja California, Mexico

Habitat: This tall annual is found in Juniper Woodland or high desert transitional chaparral. Near Boulevard this species was found within large boulder fields in the partial shade of Western Junipers, while near Miller Valley it was noted in a more open Chamise Chaparral with Tollhouse rocky coarse sandy loam.

Known Sites: Southern Jewel-flower is lightly distributed in chaparral west of Live Oak Springs and east of Miller Valley; as well as in rocks at Boulevard. It is reported from Oriflamme Canyon and Julian. Herbarium specimens are from Hauser Canyon Road near Campo Road, in the In-Koh-Pah Mountains, near Sunrise Highway, in Noble Canyon, and near Fred Canyon Road and Morris Ranch Road. Several plants were observed in the chaparral near Santa Rosa Peak Road in Riverside County. Sanders reports this plant from Whale Peak in San Diego County, and at Pinyon Flats in the San Jacinto Mountains. Munz notes it in the San Bernardino Mountains and Little San Bernardino Mountains.

Twenty specimens from Baja California are found at the San Diego Natural History Museum's herbarium; south to 28 43 minutes North where collected by Moran (SD 60705) on the north slope of Cerro de la Mina de San Juan.

Status: Given the limited development within its high desert range, Southern Jewel-flower is considered stable in the Peninsular Range. More field collection data is needed to more accurately determine the relative rarity of this species. Provisionally, all U.S. populations are recommended for protection.

Copyright May 1994 Craig H. Reiser.

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