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Helianthus angustifolius - (image 1 of 5)

Taxonomy

Family: Asteraceae

Habitat

Swamps and moist places.

Associates

Distribution

Long Island to FL and TX, primarily near the coast but also inland to southern OH, southern IN, and southern MO.

Morphology

Herbaceous perennial with fibrous roots and crown buds, more or less without rhizomes; stem solitary, 0.5-1.5 m, often hairy especially below; leaves numerous, sessile or nearly so, commonly alternate except near the base, linear or nearly so and revolute-margined, mostly 5-15 cm long and 2-10 mm wide, dark green and scabrous above, pale underneath with fine, loose, sometimes deciduous hairs, often also atomiferous-glandular; petiolate basal leaves with broader blade sometimes present; disk red-purple or sometimes yellow, (1-)1.5-2 cm wide; involucral bracts narrow, at least the inner with loose, narrow tip rarely surpassing the disk; rays (8-)10-15+, 1.5-3 cm long.

Notes

Flowers August to October

Wetland indicator: FACW

This species is often described as being tall with numerous heads but in sandy peatlands in southern NJ where these photos were taken I have only seen rather short, few-flowered specimens.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

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