Wednesday, March 8, 2017

Larrea tridentata (Creosote Bush)

9/23/16 Site#82, Jumbo Rocks Campground,
Joshua Tree National Park, Riverside County, CA


3/4/17 Shaver's Valley, E. Riverside County, CA


4/2/17 Behind campsite #45, Furnace Creek Campground, 
Death Valley National Park, Inyo County, CA 


4/2/17 Behind campsite #45, Furnace Creek Campground, 
Death Valley National Park, Inyo County, CA 


 4/3/17 Day use area off CA 190 between Stove Pipe Wells and Emigrant, 
Death Valley National Park, Inyo County, CA


2/6/05 Box Canyon Road, Mecca Hills, E. Riverside County, CA

3/15/19 Desert Lily Sanctuary, Desert Center,
Chuckwalla Valley, E. Riverside County, CA

LIFE LIST NOTES:

COMMON NAME: Creosote Bush

SPECIES: Larrea tridentata

FAMILY: Zygophyllaceae (Caltrop Family)

LIFE LIST DATE: 2/6/2005

LOCATION: Box Canyon Road, Mecca Hills, E. Riverside County, CA

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Treatment from Jepson eFlora:
NATIVE

Leaf: leaflets < 18 mm, < 8.5 mm wide, obliquely lanceolate to curved; awn between leaflets < 2 mm, +- deciduous. 

Flower: < 2.5 cm wide; sepals ovoid, appressed-hairy; petal claw +- brown; stamens > appendages; ovary hairs dense, straight, stiff, silvery (red-brown in fruit); style 4--6 mm, persistent on young fruit. 

Fruit: 4.5 mm wide (except hairs), hairs +- 2--4 mm, dense, spreading. 

Ecology: Common. Desert scrub; 

Elevation: < 1000 m. 

Bioregional Distribution: SNE, D, (uncommon Teh, SnJV, SCo, SnJt); 

Distribution Outside California: to southwestern Utah, Texas, central Mexico. 

Flowering Time:Apr--May 

Note: Closely related to southern South America Larrea divaricata. Clones may live > 11000 years, longest among extant plants; resinous odor characteristic; dominant shrub over vast areas of desert. 

Synonyms: Larrea divaricata Cav. subsp. tridentata (DC.) Felger & C.H. Lowe; Larrea tridentata var. arenaria L.D. Benson

eFlora Treatment Author: Duncan M. Porter


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