Friday, June 1, 2018

Senecio mohavensis (Mojave Ragwort, Mojave Grounsel)

4/3/11 Meccacopia Trailhead, Box Canyon Road, Mecca Hills, 
E. Riverside County, CA


COMMON NAME: Mojave Ragwort, Mojave Groundsel

SPECIES: Senecio mohavensis

FAMILY: Asteraceae (Sunflower Family)

LIFE LIST DATE: 4/3/2011

LOCATION: Meccacopia Trailhead, Box Canyon Road, Eastern Riverside County, CA

Treatment from Jepson eFlora:

Habit: Annual (0.7)1--4 dm, from taproot. 

Stem: 1, proximally or distally branched, often purple-tinged, glabrous, glaucous. 

Leaf: fleshy, glaucous, +- evenly distributed, proximal 2--6 cm, 0.5--4 cm wide, ovate to obovate, tapered to base, coarsely lobed or irregularly dentate, mid and distal similar, sessile, truncate to cordate-clasping. 

Inflorescence: heads discoid, disciform, or minutely radiate, 3--15+ in loose cyme-like clusters; involucre cylindric or urn-shaped, phyllaries 8 or 13, 6--7 mm, green or red-tinged; outer phyllaries inconspicuous, << inner. 

Pistillate Flower: 0--8; corolla 0 or narrowly tubular, ray 0--2 mm, barely surpassing phyllaries. 

Disk Flower: 15--30. 

Fruit: 1.5--3 mm, hairy. 

Ecology: Sandy, rocky washes, desert flats; 

Elevation: 100--700 m. 

Bioregional Distribution: D; 

Distribution Outside California: Nevada, Arizona, Sonora. 

Flowering Time: Mar--May 

Note: Disjunct between western North America and southwestern Asia; populations from deserts of southwestern Asia have been treated as Senecio mohavensis subsp. breviflorus (Kadereit) M. Coleman. 

eFlora Treatment Author: Debra K. Trock

No comments:

Post a Comment