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Draba oligosperma Hook.
Few-seed whitlow-grass, Fewseed draba, Whitlow grass, Woods draba
Synonym(s): Draba juniperina, Draba oligosperma ssp. subsessilis, Draba oligosperma var. juniperina, Draba oligosperma var. oligosperma, Draba oligosperma var. pectinipila, Draba oligosperma var. subsessilis, Draba pectinipila, Draba subsessilis
USDA Symbol: DROL
A low, gray cushion of tiny, narrow leaves subtends a short, erect, leafless flowering stalk, 1-5 in. tall. A small, grayish, hairy, densely tufted plant with basal leaves and racemes of small yellow flowers on leafless stalks. Forms mats to 3 ft. across. Tiny, yellow flowers occur in dense, showy clusters and fade to creamy white.
This is one of many tufted species of Draba with yellow flowers, distinguished in part by technical characteristics of the hairs. The entire surface of this plant is covered with microscopic hairs that lie flat, each with a main axis and perpendicular branches on either side (similar to two back-to-back combs).
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May , Jun
, WY Canada: AB
, BC Native Distribution:
Mts. of w. Canada & U.S. Native Habitat:
Open ridges; montane slopes; foothills; valleys
Growing ConditionsLight Requirement: Sun
Soil Description: Well-drained soil.
Conditions Comments: A rock garden candidate.
PropagationDescription: Propagate from seeds.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
Record Last Modified: 2007-01-01
Research By: TWC Staff