Prairie Gentian - Gentiana affinis
MNPS Threat Rank
Perennial from a branched caudex. Stems ascending to erect, simple, 10–30 cm. Herbage glabrous to puberulent. Leaves cauline, lanceolate to ovate, 1–4 cm long, the lowest smaller. Inflorescence a leafy-bracteate panicle. Flowers 5-merous, funnelform; calyx 5–17 mm long, the lobes unequal, acute; corolla deep blue, 23–40 mm long with fringed plaits between spreading lobes. Capsule 2–4 cm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
BC to MB south to CA, AZ, CO and SD (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)
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus appositus
, Bombus fervidus
, Bombus flavifrons
, Bombus sylvicola
, Bombus pensylvanicus
, and Bombus kirbiellus
(Colla and Dumesh 2010, Pyke et al. 2012, Williams et al. 2014, Ogilvie and Thomson 2015).
- 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.
- Ogilvie, J.E. and J.D. Thomson. 2015. Male bumble bees are important pollinators of a late-blooming plant. Arthropod-Plant Interactions 9:205-213.
- Pyke, G.H., D.W. Inouye, and J.D. Thomson. 2012. Local geographic distributions of bumble bees near Crested Butte, Colorado: competition and community structure revisited. Environmental Entomology 41(6): 1332-1349.
- Williams, P., R. Thorp, L. Richardson, and S. Colla. 2014. Bumble Bees of North America. Princeton, NJ. Princeton University Press.
- Additional ReferencesLegend: View Online Publication
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- Fultz, J.E. 2005. Effects of shelterwood management on flower-visiting insects and their floral resources. M.Sc. Thesis. Bozeman, MT: Montana State University. 163 p.
- Hollenbeck, R.R. 1974. Growth rates and movements within a population of Rana pretiosa pretiosa Baird and Girard in south central Montana. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 66 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.