Low Arctic Cinquefoil - Potentilla hyparctica
Potentilla nana, Potentilla flabellifolia var. emarginata
State Rank Reason (see State Rank above)
Rare in Montana, where it is currently only from a couple collections from the Beartooth Mtns. The remote, high-elevation habitat should greatly minimize the potential for any negative impacts to the viability of the species in the state. Accurate estimates of population levels are lacking.
Low arctic cinquefoil is a perennial with stems 5-20 cm tall that arise from a branched rootstock covered by old reddish-brown leaf bases. The basal leaves have long petioles and blades with three coarsely-toothed leaflets; the stems have a few small, sessile leaves or leaf-like bracts and 1-3 flowers borne on short stalks. Foliage is loosely covered by long hairs that remain on the plant as it ages. The flowers are 1.5-2 cm in diameter and have a green 5 lobed calyx with small appendages on each lobe, 5 yellow heart-shaped petals, and many stamens and pistils. Each pistil has a single slender style attached at or near the top of the ovary.
Flowering in late July-early August.
Distinguished from other perennial species of Potentillain Montana by having basal leaves that are strictly trifoliate, and foliage that is sparsely long hairy rather than white wooly beneath.
Alaska and the Yukon south to British Columbia and Alberta, east to Labrador. In Wyoming, known only from the N Wind River Range in Sublette and Fremont counties.
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)
Moist turf in the alpine zone.
Ecological Systems Associated with this Species
- Commonly Associated with these Ecological Systems
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Lesica, P., P. Husby, and S. V. Cooper. 1998. Noteworthy collections: Montana. Madrono 45:328-330.