Hieracium longipilum Torr.


Cite taxon page as 'WFO (2020): Hieracium longipilum Torr. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000121234. Accessed on: 14 Jul 2020'

General Information

Plants 30–75(–200) cm. Stems proximally piloso-hirsute (hairs 6–15+ mm), distally piloso-hirsute (hairs 3–10+ mm), sometimes stellate-pubescent as well. Leaves: basal 3–8+, cauline (3–)6–12+; blades oblanceolate, 45–80(–250+) × 12–30(–40+) mm, lengths 4–7+ times widths, bases cuneate, margins entire, apices rounded to acute, faces piloso-hirsute (hairs 3–8+ mm). Heads 10–20+ in paniculiform to nearly racemiform arrays. Peduncles stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well. Calyculi: bractlets 9–13+. Involucres campanulate, 6–8(–10) mm. Phyllaries 12–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular. Florets 30–40(–60); corollas yellow, ca. 7 mm. Cypselae urceolate, 3–4+ mm; pappi of 35–40+, stramineous to sordid bristles in 2+ series, 5.5–6.5 mm.

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

    "Plant with a short stout caudex or crown; stem 6–20 dm, densely long-hairy below, the hairs mostly 1 cm or more, sometimes 2 cm, becoming glabrous or nearly so above; lvs pubescent like the stem, or the hairs shorter; basal and lower cauline lvs rather numerous, oblanceolate or narrowly elliptic, 9–30 × 1.5–4.5 cm, crowded, the lowest ones often deciduous, the others progressively reduced upwards, the upper half of the stem commonly naked or merely bracteate; infl elongate, cylindric, the branches and peduncles stellate, long-stipitate-glandular and sometimes sparsely setose; invol 7–10 mm, stellate-puberulent and hispid with blackish, mostly gland-tipped hairs; fls 40–90; achenes 3–4.5 mm, narrowed above. Dry prairies, open woods, and fields, especially in sandy soil; Mich. and Ind. to Minn., Kans., and Okla. July, Aug."

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

      Bibliography

     Information From

    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).