Arnica venosa H.M. Hall
Family: Asteraceae
Shasta County Leopardbane
Arnica venosa image
Dean Wm. Taylor  

Plants 20-60 cm. Stems simple or branched (prominently ribbed; caudices woody). Leaves 6-10 pairs, cauline (basal leaves withered by flowering; proximal cauline scalelike, middle leaves largest, distal reduced, bractlike) usually broadly sessile, rarely broadly petiolate; blades (3- or 5-nerved, strongly reticulate-veined) ovate-elliptic to broadly lanceolate, 3-7 × 1.5-4 cm (firm), margins irregularly and coarsely serrate, apices acute to obtuse, faces: abaxial pilose, stipitate-glandular (especially on veins), adaxial glabrate to stipitate-glandular. Heads 1. Involucres turbinate-campanulate. Phyllaries 8-19, ovate to broadly lanceolate. Ray florets 0. Disc florets 30-60; corollas yellow; anthers yellow. Cypselae dark gray, 6-8 mm, densely hirsute (hairs duplex); pappi white, bristles barbellate. 2n = 38.

Flowering May-Jun. Open, often disturbed, oak-pine forests; 400-1400 m; Calif.

Arnica venosa is known only from Shasta and Trinity counties.

Arnica venosa image
Dean Wm. Taylor  
Arnica venosa image
Dean Wm. Taylor  
Arnica venosa image
Dean Wm. Taylor  
Arnica venosa image
Dean Wm. Taylor  
Arnica venosa image
Shauna Hee  
Arnica venosa image
Shauna Hee  
Arnica venosa image
Shauna Hee  
Arnica venosa image
Dean Wm. Taylor  
Arnica venosa image
Shasta-Trinity National Forest USDA Forest Service  
Arnica venosa image
Shasta-Trinity National Forest USDA Forest Service