Helenium flexuosum  (H. nudiflorum) southern sneezeweed Asteraceae HEFL(*); R, sb;


Helenium flexuosum

Helenium flexuosum.commons.wikimedia.org. (Accessed 4/2014).

Helenium flexuosum is a perennial herb, fibrous rooted, 20-120 cm tall, stems hairy, winged by extended leaf bases, branches stiffly ascending. 

Leaves alternate, stalkless, base extending down stem, blade narrow, 3-12 cm long, 1-2 cm wide, the lower soon deciduous, densely sprinkled with tiny, translucent dots (use lens). 

Flowers yellow, rays about 8-13, wedge-shaped, 1-2 cm long, widest at tip, 3-lobed, disk red-brown to purplish, domed, 0.6-1.5 cm wide, heads numerous, 2-3 cm wide, basal bracts finely hairy, bent outward; inflorescence branched, with leafy bracts; blooms and fruits June-Oct. 

Fruit dry, 1-seeded achene, crowned with small scales. 

Wetland status: FAC-. 

Frequency in NYC: Very infrequent. 

Origin: Southern USA. 

Habitat: Moist, open areas, soil pH 4.5-7.5 (USDA, NRCS 2007).