Annual Polemonium - Polemonium micranthum
Taprooted annual. Stems erect, simple, 5–20 cm. Herbage glandular-puberulent. Leaves 1–5 cm long, cauline; blades with 7–15 lanceolate, entire leaflets. Inflorescence of solitary flowers in upper leaf axils. Flowers: calyx 4–5 mm long, glandular-pubereulent; corolla campanulate, tube and lobes 1–2 mm long; stamens and style shorter than the corolla. Capsule 4–5 mm long, enclosed in the swollen calyx (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
BC, MT south to CA, NV and ID (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)
Disturbed soil of grasslands, sagebrush steppe, pine woodlands, lawns, gardens, often beneath shrubs; valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans
, Bombus bifarius
, Bombus flavifrons
, Bombus sylvicola
, Bombus griseocollis
, Bombus impatiens
, and Bombus kirbiellus
(Macior 1968, Macior 1974, Wilson et al. 2010, Colla and Dumesh 2010, Miller-Struttmann and Galen 2014).
- 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.
- Macior, L.M. 1968. Bombus (Hymenoptera, Apidae) queen foraging in relation to vernal pollination in Wisconsin. Ecology 49:20-25.
- Macior, L.M. 1974. Pollination ecology of the Front Range of the Colorado Rocky Mountains. Melanderia 15: 1-59.
- Miller-Struttmann, N.E. and C. Galen. 2014. High-altitude multi-taskers: bumble bee food plant use broadens along an altitudinal productivity gradient. Oecologia 176:1033-1045.
- Wilson, J.S., L.E. Wilson, L.D. Loftis, and T. Griswold. 2010. The montane bee fauna of north central Washington, USA, with floral associations. Western North American Naturalist 70(2): 198-207.