Hieracium scabrum Michx.
  • Fl. Bor.-Amer. (Michaux) ii. 86.


Cite taxon page as 'WFO (2020): Hieracium scabrum Michx. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000037720. Accessed on: 06 Jul 2020'

General Information

Plants (15–)30–60+ cm. Stems proximally piloso-hirsute (hairs 1.5–5+ mm), sometimes stellate-pubescent as well, distally stellate-pubescent, sometimes stipitate-glandular, rarely piloso-hirsute (hairs 1–2+ mm). Leaves: basal 0(–3), cauline 6–24+; blades elliptic or oblanceolate to spatulate or lanceolate, (20–)35–80(–120+) × (10–)20–35(–50+) mm, lengths 2–6+ times widths, bases cuneate to rounded-truncate, margins usually entire, sometimes denticulate, apices rounded to obtuse, faces hirtellous to piloso-hirsute (hairs 0.5–1+ mm). Heads (5–)10–25(–50+) in corymbiform to paniculiform arrays. Peduncles stellate-pubescent and stipitate-glandular (hairs 0.3–0.6+ mm). Calyculi: bractlets 12–15+. Involucres campanulate, 7–9 mm. Phyllaries 13–21+, apices ± acuminate, abaxial faces stellate-pubescent and stipitate-glandular, rarely, if ever, piloso-hirsute. Florets (30–)40–60+; corollas yellow, 9–11 mm. Cypselae columnar, 2.5–3 mm; pappi of 30–40+, stramineous bristles in ± 2 series, 6–7 mm.

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

    "Stems mostly solitary from a short, simple caudex or crown, 2–15 dm, setose at least near the base with spreading hairs seldom as much as 5 mm, becoming stellate and long-stipitate-glandular upward, densely so in the infl; lvs setose on both sides, more densely so on the petiole and along the midrib beneath; basal and often also the lowermost cauline lvs ordinarily deciduous, the lower lvs broadly oblanceolate to elliptic, 5–20 cm (including the usually short petiole) × 1–4.5 cm, the others progressivelyreduced upward, soon becoming sessile, so that the upper part of the stem does not appear to be very leafy; infl open-corymbiform (especially in smaller plants) to more often elongate and cylindric; invol 6–9 mm, hispid with blackish, mostly gland-tipped hairs, especially toward the also stellate-hairy base; fls 40–100; achenes 2–3 mm, truncate, only very obscurely if at all narrowed upward; 2n=18. Open ground and dry woods; especially in sandy soil; N.S. and Que. to Minn., s. to Va., Ky., Mo., and in the mts. to n. Ga. July–Sept."

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

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    • A CC0 1.0 Universal (CC0 1.0).
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    Flora of North America @ efloras.org
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    '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.
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