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Leafy Dwarf Knotweed - Polygonum minimum
Annual. Stems branched, ascending, 1–15 cm. Leaves ovate, nearly sessile, 3–10 mm long; stipules 2–3 mm long, scabrous. Flowers ca. 2 mm long, 1 to 4, concealed in leaf axils; pedicels 2–3 mm long; tepals greenish, pink, or white. Achene 3-sided, ca. 2 mm long, shiny black (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
BC, AB south to CA and CO (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
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(Observations spanning multiple months or years are excluded from time charts)
Shallow, vernally wet soil of outcrops, open slopes, along streams; subalpine, alpine (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 bifarius
, Bombus flavifrons
, Bombus frigidus
, Bombus melanopygus
, Bombus sylvicola
, Bombus occidentalis
, Bombus pensylvanicus
, Bombus insularis
, and Bombus kirbiellus
(Macior 1974, 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.
- Macior, L.M. 1974. Pollination ecology of the Front Range of the Colorado Rocky Mountains. Melanderia 15: 1-59.
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