Western Honeysuckle -
Lonicera caerulea var. cauriana
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Native Species Global Rank
State Rank Reason below) C-value
Agency Status USFWS
State Rank Reason (see State Rank above)
Lonicera caerula variety cauriana occurs in southwest Montana where it seems well represented. It grows in wet meadows, fens, and other wetlands at moderate to high elevations. Populations appear to be stable, growing in habitats with few to no threats. Current data on locations, population sizes, and threats is needed.
Details on Status Ranking and Review
Score E - 5,000-20,000 sq km (~2,000-8,000 sq mi) Area of Occupancy
Score E - 26-125 4-km2 grid cells Number of Populations
Score C - 21 - 80 Number of Occurrences or Percent Area with Good Viability / Ecological Integrity
Score C - Few (4-12) occurrences with excellent or good viability or ecological integrity Environmental Specificity
Score B - Narrow. Specialist or community with key requirements common Threats
Score D - Low
CommentNo known threats.
Shrubs. Stems erect, branched 20–80 cm; twigs sparsely villous. Leaf blades oblanceolate to obovate, 2–7 cm long, rounded at the tip, sparsely villous beneath. Inflorescence: peduncles 2–8 mm long; lower 2 bracts linear, green; upper bracts brown, enclosing the ovaries. Flowers: corolla yellow, 9–13 mm long, glabrate; lobes about as long as the tube. Berry red (glaucous-blue), about 1 cm long, born in the cup formed by the bracts (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
Our plants are variety
(Fernald) B. Boivin.
Circumboreal south to CA, NV, WY, MN and PA (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
(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:
(Plath 1934, Macior 1968, Thorp et al. 1983, Wilson et al. 2010, Colla and Dumesh 2010, Colla et al. 2011, Williams et al. 2014).
Literature Cited Above
Legend: View Online Publication Colla, S., L. Richardson, and P. Williams. 2011. Bumble bees of the eastern United States. Washington, DC: USDA Forest Service, Pollinator Partnership. 103 p. 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. Plath, O.E. 1934. Bumblebees and their ways. New York, NY: Macmillan Company. 201 p. 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. 208 p. 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.