Saturday, February 13, 2016

Asclepias erosa (Desert Milkweed)

5/25/03 Kelso-Cima Road, Mojave National Preserve, San Bernardino County, CA

5/25/03 Kelso-Cima Road


COMMON NAME: Desert Milkweed

SPECIESAsclepias erosa

FAMILY: Apocynaceae (Dogbane Family) - (genus previously included in Asclepiadaceae, now a sub-family of Apocynaceae)


LOCATION: Kelso-Cima Road, Mojave National Preserve (East Mojave), San Bernardino County, CA


Treatment from The Jepson Manual (1993):

Perennial, glabrous to very hairy

Stem ascending to erect

Leaves opposite, persistent, sessile; blade lanceolate, elliptic, or ovate, base tapered to cordate, sometimes clasping stem

Flower: corolla reflexed to spreading, pale cream or greenish white; hoods elevated above corolla base, > anther head, cream, yellow, or reddish; horns exserted, < to ± = hoods

Ecology: Dry slopes, washes

Elevation: 150–1900 m.  

Bioregional distribution: Southwestern California, White and Inyo Mountains, Desert 

Distribution outside California: Arizona, Baja California

Flowering time: May–Jul

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