Narrowleaf Hawkweed - Hieracium umbellatum
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 et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
AK to Greenland south to OR, CO, IA and WV (Lesica et al. 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)
The following animal species have been reported as pollinators of this plant species or its genus 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.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Additional ReferencesLegend: View Online Publication
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- 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. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
- Plaggemeyer, J.B. 1995. Effects of overstory thinning on lodgepole pine understories. M.Sc. Thesis. Bozeman, MT: Montana State University. 55 p.
- Simanonok, M.P. and L.A. Burkle. 2019. Nesting success of wood-cavity-nesting bees declines with increasing time since wildfire. Ecology and Evolution 9:12436-12445.
- White, K.L. 1960. Differential range use by mule deer in the spruce-fir zone. Northwest Science 34(4):118-126.