Pussy Willow - Salix discolor
(see State Rank Reason below)
MNPS Threat Rank
State Rank Reason (see State Rank above)
Salix discolor is known from 21 widely scattered locations in Montana from 1911-2010. Plants have been found in city parks that have some native habitat, along roads and a diversion dam, in or adjacent to orchards and homesteads, and in native, un-impaired habitats. Current data is needed on the twelve locations found prior to 1970. This species resembles Salix planifolia and could be overlooked.
- Details on Status Ranking and Review
ScoreF - 20,000-200,000 sq km (~8,000-80,000 sq mi)
Area of Occupancy
ScoreD - 6-25 4-km2 grid cells
Number of Populations
ScoreC - 21 - 80
Number of Occurrences or Percent Area with Good Viability / Ecological Integrity
ScoreB - Very few (1-3) occurrences with excellent or good viability or ecological integrity
ScoreC - Moderate. Generalist or community with some key requirements scarce
ScoreD - Low
CommentThreat category includes: Land development (potential).
Shrub to 10 m high. Twigs brown and hairy at first, soon black and glabrous. Leaf blades 3–8 cm long, lanceolate to obovate, entire to weakly crenate margins, becoming glabrous, glaucous beneath. Female catkins emerge before the leaves, 2–6 cm long, sessile; scales brown to black, long-hairy. Capsules long-beaked, pubescent, 6–8 mm long; stipe ca. 1 mm long; style ca. 0.5 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
BC to NL south to CO, SD, IN and NC (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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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Argus, G. 2010. Salix. In: Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. 16+ vols. New York and Oxford. Vol. 7.
- Dorn, R.D. 2010. The genus Salix in North America north of Mexico. 59 pp.
- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.
- Pipp, Andrea. 2016. Personal communication on a Salix discolor observation. Montana Natural Heritage Program, Helena, Montana