Skip Navigation
Sign In
  • Home
  • Search
    • Search Collections
    • Map Search
  • Chicago Botanic Garden
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Denver Botanic Gardens
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Desert Botanical Garden
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • NY Botanical Garden
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Marie Selby Botanical Gardens
    • Project Information
    • Checklists
    • Create a Checklist
    • Dynamic Key
  • Sitemap

Hymenopappus

Hymenopappus
Family: Asteraceae
Hymenopappus image
Max Licher
  • FNA
  • Gleason & Cronquist
  • Resources
John L. Strother in Flora of North America (vol. 21)
Biennials or perennials, to 120 cm. Stems erect, often scapiform (1 stem per crown in biennials, usually 3+ in perennials). Leaves mostly basal or basal and cauline; alternate; petiolate; blades usually 1-2+ times pinnately lobed (lobes usually ± filiform), ultimate margins usually entire, rarely toothed, faces glabrous or hairy, often tomentose, usually gland-dotted as well. Heads radiate or discoid, in ± corymbiform arrays. Involucres obconic to hemispheric, 4-15+ mm diam. Phyllaries 5-13+ in 2-3+ series, subequal, usually membranous- or scarious-margined (often yellowish, whitish, or purplish). Receptacles flat or convex, epaleate (except H. newberryi). Ray florets 0 or 8, pistillate, fertile; corollas white to ochroleucous. Disc florets 12-70+, bisexual, fertile; corollas usually yellow to ochroleucous or whitish to purplish, tubes longer than or about equaling funnelform or abruptly dilated, campanulate throats, lobes 5 (reflexed at anthesis). Cypselae obpyramidal (4-, sometimes 5-angled, each face usually 1-4-ribbed, glabrous or hirtellous to villous); pappi 0 or of 12-22 orbiculate to spatulate scales. x = 17.

My treatment of Hymenopappus is essentially an adaptation of that by B. L. Turner (1956).

Vascular plants of NE US and adjacent Canada
Heads mostly discoid; invol bracts appressed, in 2-3 equal series, at least the inner with broad, obtuse, scarious, somewhat petaloid, yellowish or whitish tip, ±herbaceous below; receptacle small, naked; disk-fls perfect, the cor yellow or whitish, with campanulate 4-5-lobed throat, the lobes mostly ovate; style-branches flattened, with very short, minutely hairy appendage; achenes ca 15-20-nerved and 4-5-angled; pappus of 12-20 membranous or hyaline small scales, or rarely wanting; herbs with alternate, pinnatifid lvs and several or many small or middle-sized, hemispheric or campanulate heads. 10, N. Amer.

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

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within checklist: Badlands National Park Plants
Hymenopappus filifolius
Media resource of Hymenopappus filifolius
Map not
Available
Hymenopappus tenuifolius
Media resource of Hymenopappus tenuifolius
Map not
Available
Institute for Museum and Library Services KU BI Logo Logo for the Biodiversity Knowledge Integration Center

This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

EcoFlora is part of the SEINet Portal Network. Learn more here.

Powered by Symbiota.