Giant blazingstar - Mentzelia laevicaulis
(see State Rank Reason below)
MNPS Threat Rank
State Rank Reason (see State Rank above)
Widely, though sporadically distributed across Montana. Usually not abundant where found.
Usually biennial. Stems branched, 20–80 cm. Leaves oblanceolate and petiolate below to lanceolate and sessile above, 4–12 cm long, deeply lobed to serrate. Flowers light yellow with pinnatifid bracts below the hypanthium, nocturnal; sepals 2–3 cm long; petals 5, lanceolate, 3–6 cm long. Capsule broadly cylindric, 2–4 cm long; seeds flattened, broadly winged, horizontal in several columns (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
BC, MT south to CA, UT and CO (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 centralis
, Bombus fervidus
, Bombus huntii
, and Bombus pensylvanicus
(Thorp et al. 1983, Williams et al. 2014).
- Literature Cited AboveLegend: View Online Publication
- Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
- 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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- Guenther, G.E. 1989. Ecological relationships of bitterbrush communities on the Mount Haggin Wildlife Management Area. M.Sc. Thesis. Bozeman, MT: Montana State University. 73 p.
- Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.