Saturday, January 23, 2016

Delphinium polycladon (Mountain Marsh Larkspur)

7/10/07 Rock Creek, Little Lakes/Mosquito Flat trailhead, Inyo National Forest, 
Eastern Sierra, Mono County, CA 

7/10/07 Rock Creek 

 7/10/07 Rock Creek

7/6/02 Onion Valley, 9,200' elevation, Eastern Sierra, Inyo County, CA 

7/6/02 Onion Valley


COMMON NAME: Mountain Marsh Larkspur, High Mountain Larkspur

SPECIES: Delphinium polycladon

FAMILY: Ranunculaceae (Buttercup Family)


LOCATION: Onion Valley at 9,200' elevation, Independence Region, Inyo National Forest, Eastern Sierra, Inyo County, CA


Treatment from The Jepson Manual (1993):

Root generally > 15 cm, distally branched; buds prominent (except on herbarium specimens)

Stem 15–160 (generally 80–120) cm, glabrous, often 2 or more per root system

Leaves mostly on lower third of stem, glabrous; lobes often > 6 mm at widest

Inflorescence often ± 1-sided; flowers 3–35; pedicels 10–150 mm, ± S-shaped, 10–80 mm apart, glabrous to puberulent

Flower: lateral sepals 12–18 mm, spur 11–22 mm

Fruit 13–20 mm

Seed ± striate

Ecology: Streamsides, wet talus

Elevation: 2200–3600 m.  

Bioregional distribution: High Sierra Nevada, White and Inyo Mountains 

Flowering time: Jul–Sep

Hybridizes with  D. nuttallianum ,  D. glaucum. 

Horticultural information: DRN, DRY; DFCLT.

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