Monday, November 23, 2015

Stanleya pinnata (Prince's Plume)

6/14/98 Hwy. 178 to Panamint Springs, Death Valley National Park, Inyo County, CA


COMMON NAME: Prince's Plume

SPECIES: Stanleya pinnata

FAMILY: Brassicaceae (Mustard Family)


LOCATION: Hwy. 178 to Panamint Springs (above 4,000 ft. elevation), Death Valley National Park, Inyo County, CA 


Treatment from The Jepson Manual (1993):

Stems several–many, 4–15 dm, glaucous; hairs 0 or sparse; base branched, woody

Leaves petioled; basal and lower cauline 5–15 cm, 2–5 cm wide, widely lanceolate, deeply pinnately lobed, hairs 0 or short; upper cauline linear-lanceolate to ovate, entire or few-lobed

Inflorescence 1–3 dm, dense; buds yellowish

Flower: sepals spreading or reflexed, 10–15 mm; petals 10–18 mm, yellow, claws with dense, long, wavy hairs on inner side; stamens >> petals, ± equal

Fruit spreading to ± downcurved, 3–8 cm, ± cylindric; stalk above receptacle 10–25 mm; pedicel spreading, 6–12 mm, hairs 0 or few

Seed ± 2 mm, oblong, plump; embryonic root at back of 1 cotyledon

Ecology: Generally open sites, slopes, canyons

Elevation: < 1850 m.  

Bioregional distribution: s Sierra Nevada Foothills, San Joaquin Valley, South Coast Ranges, South Coast, Western Transverse Ranges, San Gabriel Mountains, Peninsular Ranges, Great Basin Floristic Province, Mojave Desert  

Distribution outside California: to c US

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