Hieracium traillii Greene


Cite taxon page as 'WFO (2020): Hieracium traillii Greene. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000116355. Accessed on: 06 Jul 2020'

General Information

Plants 25–60+ cm. Stems proximally glabrous or stellate-pubescent, distally glabrous or stellate-pubescent. Leaves: basal 5–6+, cauline 0(–1+); blades oblanceolate to spatulate, 40–80 × 18–45+ mm, lengths 3–5+ times widths, bases cuneate, margins usually entire, apices rounded to obtuse, abaxial faces piloso-hirsute (hairs 1–3+ mm), adaxial glabrous. Heads 8–12+ in corymbiform arrays. Peduncles stellate-pubescent and stipitate-glandular. Calyculi: bractlets 5–8+. Involucres hemispheric to campanulate, 8–10 (× 6–9) mm. Phyllaries 13–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well. Florets 30–60+; corollas yellow, ca. 12 mm. Cypselae (black or red-brown) columnar, 3–4 mm; pappi of ca. 40+, stramineous bristles in ± 2 series, 6–7 mm.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 1
    • ]. 

    "Similar to no. 14 [Hieracium venosum L.], but more hairy; lvs long-setose over the surface beneath and often sparsely so above, not purple-veined; peduncles avg stouter, densely stellate-tomentose as well as copiously provided with spreading, blackish, gland-tipped hairs; heads avg larger, the invol to 12 mm, conspicuously hairy, with long, eglandular setae, shorter, blackish, gland- tipped hairs, and also some small, stellate hairs. Dry, open woods, often on shale-barrens; mts. of s. Pa. to Va. and W.Va. May–Aug. (H. greenii Porter & Britton, a preoccupied name)"

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

      Bibliography

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    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • A CC0 1.0 Universal (CC0 1.0).
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).