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Western Wetland Flora

Field Office Guide to Plant Species

Parrish's Yampah
Perideridia parishii (Coult. & Rose) A. Nels. & J.F.

JPG -- Species Photo JPG -- Distribution Map

Family: Parsley (Umbelliferae)
Flowering: July-September
Field Marks: The genus Perideridia consists of species that have white flowers, are smooth, and have divided leaves with toothless segments. This species is further distinguished by its elongated fruits that taper to each end.
Habitat: Wet meadows.
Habit: Perennial herb with 1 or more tubers.
Stems: Upright, slender, branched, up to 2 1/2 feet tall, smooth.
Leaves: Alternate, sometimes simple but usually divided into very narrow, toothless segments up to 4 inches long, smooth.
Flowers: Borne in umbels, with usually 8-15 umbels in an inflorescence; bractlets linear to obovate.
Sepals: 5, green, very tiny.
Petals: 5, white, free from each other, up to 1/8 inch long.
Stamens: 5.
Pistils: Ovary inferior, smooth.
Fruits: Oblongoid to ovoid, up to 1/6 inch long, longer than broad, tapering to each end.

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/florawe/species/6/peripari.htm
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Page Last Modified: Saturday, 02-Feb-2013 06:26:26 EST
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