Narrowleaf Hawkweed - Hieracium umbellatum
MNPS Threat Rank
Fibrous-rooted from a short rhizome. Stems often branched above, erect, 30–90 cm. Herbage glabrate, often sparsely hirsute toward base. Leaves mainly cauline, basal withered at flowering, sessile above; blades oblanceolate to ovate, entire to shallowly dentate, 3–12 cm long. Heads 3 to 20; involucre campanulate, 8–14 mm high; phyllaries linear-lanceolate, glabrate to puberulent or sparsely short-setose. Rays 30 to 80, yellow; ligules 6–11 mm long. Achenes 2–4 mm long; pappus white or tawny (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
AK to Greenland south to OR, CO, IA and WV (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Open forest, streambanks, woodlands, grasslands, roadsides; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
The following animal species have been reported as pollinators of this species or genera where their geographic ranges overlap: Bombus ternarius
, Bombus terricola
, Bombus bohemicus
, and Bombus flavidus
(Heinrich 1976, Colla and Dumesh 2010).
- Literature Cited AboveLegend: View Online Publication
- Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141: 39-68.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Aradottir, A.L. 1984. Ammonia volatilization from native grasslands and forests of SW Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 48 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.