Helenium bigelovii A.Gray in Torr.
Family: Asteraceae
Bigelow's Sneezeweed
[Helenium rivulare Rydb.]
Helenium bigelovii image
Keir Morse  

Perennials, 30-130 cm. Stems 1-3(-10), unbranched or sparingly branched distally, weakly to moderately winged, glabrous proximally, glabrous or sparsely hairy distally. Leaves glabrous or sparsely hairy; basal blades oblanceolate to oblong-elliptic, entire; proximal and mid blades lanceolate to oblong-elliptic, entire; distal blades linear to lanceolate, entire. Heads 1-20 per plant, borne singly or in paniculiform arrays. Peduncles (6-)10-30 cm, sparsely to moderately hairy. Involucres hemispheric to globoid, 12-20 × (14-)17-22(-25) mm. Phyllaries (connate proximally) moderately to densely hairy. Ray florets 14-20, pistillate, fertile; corollas yellow, 13-25 × 5-10(-12) mm. Disc florets 250-500(-800+); corollas yellow proximally, yellow to brown to purple distally, 3-4.4(-4.8) mm, lobes 5. Cypselae 1.8-2.4 mm, moderately hairy; pappi of 6-8 entire, aristate scales 1.3-2.2(-2.7) mm. 2n = 32.

Flowering (May-)Jul-Aug(-Oct). Bogs and swamps, around ponds and lakes, along streams, in moist meadows; 60-3400 m; Calif., Oreg.

Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Charles Webber  
Helenium bigelovii image
Steven Thorsted  
Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Keir Morse  
Helenium bigelovii image
Keir Morse