Tuesday, April 18, 2017

Psorothamnus arborescens (Indigo Bush)


4/3/17 CA 190W between Emigrant and Towne Pass, 
Death Valley National Park, Inyo County, CA 

 4/3/17 CA 190W between Emigrant and Towne Pass, 
Death Valley National Park, Inyo County, CA 

LIFE LIST NOTES:

COMMON NAME: Indigo Bush

SPECIES: Psorothamnus arborescens

FAMILY: Fabaceae (Pea Family)

LIFE LIST DATE: 4/3/2017

LOCATION: CA 190W between Emigrant & Towne Pass, Death Valley National Park, Inyo County, CA 

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Treatment from Jepson eFlora:
NATIVE

Habit: Shrub < 1 m, armed or not, glabrous to +- puberulent. 

Leaf: leaflets generally 5--7, 3--14 mm, terminal (occasionally all) often continuous with axis. 

Inflorescence: raceme, open; pedicel bractlets 2. 

Flower: calyx lobes +- equal, generally < tube; corolla 6--10 mm, indigo-blue to violet-purple, glands 0. 

Fruit: exserted, 7--10 mm, ovoid-ellipsoid, hairs 0 to fine, glands few to several, scattered, large, +- yellow. 

Note: Possibly best united with Psorothamnus fremontii; varieties similar morphologically, distinct geographically. 

eFlora Treatment Author: Martin F. Wojciechowski & Duane Isely

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