Northern Prairie Wildlife Research Center


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Wyoming Rare Plant Field Guide

American Trailplant
Adenocaulon bicolor

JPG -- Species Photo

GIF -- Distribution Map

Similar Species: Petasites sagittatus has a pappus of thin bristles. Osmorhiza spp. have similar fruits, but have compound leaves.
Flowering/Fruiting Period: June-July.
Distribution: S British Columbia to California, east to NW Montana. Disjunct in the Black Hills of South Dakota and Wyoming (Crook Co.) and the northern Great Lakes area.
Habitat: Moist, shady birch/hazelnut woods, often on north-facing slopes in small drainages. Elev. 3400-5400 ft.
References: Cronquist 1955; Dorn 1992 b; Fertig 1993 b; Marriott 1993 b; Ode and Marriott 1990; Van Bruggen 1985.

U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/wyplant/spec/adenbico.htm
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Page Last Modified: Saturday, 02-Feb-2013 06:53:53 EST
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