Page author: Hattie Palmer
Draba reptans
Carolina whitlow-grass
Specimens
Photos

Distribution: Occurring east of the Cascades crest in Washington; central British Columbia to California, east to the Atlantic Coast.

Habitat: Desert plains and foothills.

Flowers: March-May

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Self-pollination, bees, flies

Description:
General:

Annuals, generally bearing scapes; stems few, 0.3-1.2 dm, unbranched, varying levels of pubescence near base with 2-3-rayed trichomes, occasionally with simple or spurred trichomes, distal portions usually glabrous, seldom with sparse trichomes.

Leaves:

Basal leaves not in rosettes, petioles not clearly defined, blades nearly round to elliptic or narrower toward base, 0.5-2.3 cm long and 1.5-8 mm broad, margins entire, pubescence above and beneath; upper surface trichomes stalked, 2-4-rayed, 0.1-0.5 mm; lower surface trichomes simple, to 0.6-1 mm, with stalked, 2-rayed trichomes, 0.7 mm; cauline leaves generally absent, occasionally 1-3, sessile, blade nearly same as basal.

Flowers:

Inflorescence racemose, usually 5-12 flowered, ebracteate, no elongation in fruit; rachis rigid, generally glabrous rarely minutely pubescent; fruiting pedicels spreading to horizontally or ascending, straight, 2-7 mm, generally glabrous; sepals 4, oblong, 1.5-2.3 mm, pubescent with simple trichomes; petals 4 or rarely absent, white, narrower towards base, 2-4.5 mm long and 1-1.5 mm broad; anthers 0.4-0.5 mm, ovate.

Fruit:

Siliques 7-16 mm long and 1.2-2.3 mm broad, generally linear, plane, flattened; valves glabrous or pubescent with simple or antrorse trichomes, sometimes with less spurred or 2-rayed trichomes; ovaries containing 32-88 ovules; seeds oblong or ovoid, 0.5-0.8 mm long and 0.3-0.5 mm broad.

Accepted Name:
Draba reptans (Lam.) Fernald
Publication: Rhodora. 36: 368. 1934.

Synonyms & Misapplications:
Arabis reptans Lam.
Draba reptans (Lam.) Fernald ssp. stellifera (O.E. Schulz) Abrams [Abrams]
Draba reptans (Lam.) Fernald var. micrantha (Nutt.) Fernald [Abrams]
Draba reptans (Lam.) Fernald var. reptans [HC]
Draba reptans (Lam.) Fernald var. stellifera (O.E. Schulz) C.L. Hitchc. [HC]
Tomostima caroliniana (Walter) Raf.
Additional Resources:

PNW Herbaria: Specimen records of Draba reptans in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Draba reptans checklist entry

OregonFlora: Draba reptans information

E-Flora BC: Draba reptans atlas page

CalPhotos: Draba reptans photos

2 photographs:
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