[The Genus Draba East of the Cascade Mts. of Oregon and Washington]

Alkali Cusickiella, Douglas' Draba

Cusickiella douglasii

Synonyms: Draba douglasii, Draba douglasii var. crockeri

Close-up of the flowers of Alkali Cusickiella, Douglas' Draba: Cusickiella douglasii (Synonyms: Draba douglasii, Draba douglasii var. crockeri)

Douglas' draba as seen in the Columbia Hills in the eastern Columbia River Gorge............... March 17, 2007.

Rosettes of leaves of Alkali Cusickiella, Douglas' Draba: Cusickiella douglasii (Synonyms: Draba douglasii, Draba douglasii var. crockeri)The photo at right shows a close-up of the grayish-blue-green tufts of basal leaves of Douglas' Draba. note the ciliated leaf margins. Photographed on Blue Ridge in the Malheur NF........May 25, 2003.
Characteristics:

Also known as Douglas' whitlow-grass, Douglas' Draba is a low, matted perennial with short stems from 1-2 cm high, the stems covered with old leaves at the base. The leaves and stems are often covered with simple to forked hairs which may give plants a gray to blue-green cast. Individual leaves are thick, leathery, and rigid, the earlier leaves spatulate and 5-7 mm long and the later oblanceolate in shape and up to 14 mm long. They are somewhat concave above with a stout midrib. The margins are entire and often a fringe of hairs.

The racemes are 2-10 flowered. The flowers are white with four petals from 4-6 mm long. The fruits are somewhat inflated silicles which are ovoid, leathery and 3-7 mm long. They are covered with short simple hairs.


Habitat:

Douglas' Draba may be found on open rocky ridges and buttes among sagebrush and grasses from the lowlands to lower elevations in the mountains.


Range:

Douglas' Draba may be found from south-central Washington to central and southeastern (Steens Mt.) Oregon, and south to central Nevada.


Flowers, leaves and flower buds of Alkali Cusickiella, Douglas' Draba: Cusickiella douglasii (Synonyms: Draba douglasii, Draba douglasii var. crockeri)

Douglas' draba as seen in the Columbia Hills in the eastern Columbia River Gorge...............early March 2005. Note the numerous hairs on the margins of the leaves.

Fruits of Alkali Cusickiella, Douglas' Draba: Cusickiella douglasii (Synonyms: Draba douglasii, Draba douglasii var. crockeri)

Douglas' draba with developing fruits growing in scree next to a gravel pit at Long Hollow Pass in the South Steens of southeastern Oregon.............May 31, 2012.

Fruits of Alkali Cusickiella, Douglas' Draba: Cusickiella douglasii (Synonyms: Draba douglasii, Draba douglasii var. crockeri)

Douglas' Draba in fruit.

Fruits of Alkali Cusickiella, Douglas' Draba: Cusickiella douglasii (Synonyms: Draba douglasii, Draba douglasii var. crockeri)

The photo above shows Douglas's Draba as seen growing on serpentine soils at Blue Ridge, Malheur NF...........May 25, 2003. Note the withering white petals and newly formed, flattened and elliptical fruits.

Paul Slichter