Sunday, February 26, 2017

Senecio integerrimus (Mountain Butterweed, Single-stemmed Groundsel)

7/4/16 Rock Creek, Mosquito Flat campground, Inyo National Forest,
Eastern Sierra, Mono County, CA 

7/4/16 Rock Creek, Mosquito Flat campground


COMMON NAME: Mountain Butterweed, Single-stemmed Groundsel

SPECIES: Senecio integerrimus

FAMILY: Asteraceae (Sunflower Family)

LIFE LIST DATE: 7/4/2016

LOCATION: Rock Creek, Mosquito Flat campground, Eastern Sierra, Inyo National Forest, Mono County, CA


Treatment from Jepson eFlora:

Habit: Biennial or perennial herb (1)2--7 dm, from button-like caudex; roots fleshy-fibrous. 

Stem: 1, +- cobwebby, tomentose, or long-soft-wavy hairy, sometimes +- glabrous in age. 

Leaf: basal and proximal cauline +- petioled, 6--25 cm, 1--6 cm wide, elliptic to lanceolate or oblanceolate, occasionally rounded-deltate or +- round, tapered to truncate or cordate, entire to +- dentate, mid-cauline sessile, distal reduced, bract-like. 

Inflorescence: heads generally radiate, (3)6--15(40+) in +- flat-topped clusters; involucre +- urn-shaped, phyllaries 13 or 21, (4)5--12 mm, linear or lanceolate, green- or black-tipped; outer phyllaries few, <= 2/3 inner. 

Ray Flower: (0) generally 5, 8 or 13; ray 5--15(20) mm, yellow or white. 

Disk Flower: 35--45. 

Fruit:2.5--3 mm, generally glabrous (hairy on ribs). 

eFlora Treatment Author: Debra K. Trock

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