Sunday, January 29, 2017

Raillardella argentea (Silky Raillardella)

7/9/2016 Off Hwy. 108 (Sonora Pass Hwy.) at 9,400' elevation, 
Stanislaus National Forest, Sierra Nevadas, Tuolumne County, CA



COMMON NAME: Silky Raillardella

SPECIES: Raillardella argentea

FAMILY: Asteraceae (Sunflower Family)

LIFE LIST DATE: 7/9/2016

LOCATION: Off Hwy. 108 (Sonora Pass Highway) at 9,400' elevation, Stanislaus National Forest, Sierra Nevada range, Tuolumne County, CA


Treatment from Jepson eFlora:


Habit: Plant 1--15 cm. 

Leaf: basal, 0.7--8 cm, entire or minutely dentate, generally oblanceolate, silky-hairy, minutely glandular or not. 

Inflorescence: heads discoid, cylindric to bell-shaped; peduncle 0.1--12.5 cm, subtending bracts 0--1; phyllaries 0; paleae 5--15, 6--16 mm, +- fused. 

Ray Flower: 0. 

Disk Flower: 7--26; corolla 6--11 mm, yellow. 

Fruit: 5--9.5 mm, +- linear; pappus scales 16--30, 6--11 mm. 

Ecology: Dry, open, generally gravelly sites in conifer forests, semi-barren subalpine and alpine slopes, flats; 

Elevation: 1800--3900 m. 

Bioregional Distribution: KR, CaRH, SNH, SnBr, Wrn, SNE; 

Distribution Outside California: Oregon, western Nevada. 

Flowering Time: Jul--Sep 

Note: Interfertile but not occurring with Raillardella pringlei; hybridizes with Raillardella scaposa

eFlora Treatment Author: Bruce G. Baldwin

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