Helenium 


Cite taxon page as 'WFO (2020): Helenium . Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000017185. Accessed on: 31 Mar 2020'

General Information

"Heads mostly radiate, the rays pistillate or neutral, mostly yellow, cuneate, 3-lobed, not very numerous; invol bracts in 2–3 series, subequal or the inner shorter, ± herbaceous, generally soon deflexed, the outer sometimes joined at the base; receptacle convex to ovoid or conic, naked; disk-fls very numerous, perfect, the cor-lobes glandular-hairy; style branches flattened, with ventromarginal stigmatic lines and dilated, subtruncate, penicillate tip; achenes 4–5-angled, with as many intermediate ribs, pubescent on the angles and ribs, or glabrous; pappus of 5–10 scarious or hyaline, often awn-tipped scales; herbs with alternate, glandular-punctate, usually decurrent lvs and solitary to numerous heads. 40, New World."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 1
    • ]. 

      Bibliography

    • 1 "Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp."

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    New York Botanical Garden
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    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
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