Draba reptans (Lam.) Fern.
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Family: Brassicaceae
Genus: Draba
Species Synonyms: Draba reptans var. micrantha (Nutt.) Fern.
Draba reptans var. stellifera (O.E. Schulz) C.L. Hitchc.
Draba reptans var. typical C.L. Hitchc.
Draba reptans ssp. stellifera (O.E. Schulz) Abrams
Draba micrantha Nutt.
Draba caroliniana Walt.
Common Names: creeping draba
white whitlow-grass
creeping whitlow-grass
Carolina draba
Carolina whitlow-grass
Carolina whitlowgrass
Canada: southern Alberta - southern Saskatchewan - southern Manitoba, southern Ontario
Saskatchewan: southern Saskatchewan; Saskatchewan Landing to Souris River Valley
Ecoregion: Mixed Grassland, Moist Mixed Grassland, Aspen Parkland
Saskatchewan: silty or sandy grassland slopes and flats
Associated species: Allium textile, Bouteloua gracilis, Draba nemorosa, Lappula occidentalis, Opuntia polyacantha, Plantago elongata, Plantago patagonica
Provincial Status According
to Harms (2003):
Nature Conservancy Status:
G5 S1
Saskatchewan Species at
Risk Status:
Draba reptans is threatened in Saskatchewan because it is limited to one general region of the province and most local populations are small.
Height: to 15 cm
Roots: taproot slender
Stems: annual, solitary to several, erect, simple to branched, slender, < 1 mm wide, hispid below, glabrous above
Leaves: basal and cauline; basal leaves relatively few, 4 – 15 mm long, 1 – 3 mm wide, spatulate to ovate, pubescence bifid and trifid, margin ciliate; cauline leaves 1 – 4, near base of stem, opposite, 3 – 6 mm long, 1 – 3 mm wide, pubescence stellate and forking, margin entire
Inflorescence: terminal, subumbellate, 5 – 10-flowered; rachis and pedicels glabrous; flowers dimorphic with smaller, apetalous flowers and flowers with petals
Flowers: calyx 1.5 – 2.5 mm long, hairs simple; corolla white; style very short
Fruits: silique 5 – 15 mm long, 1 – 2 mm wide, linear-lanceolate, slightly curved, glabrous or hispid
1 Flowers yellow; stems very leafy or pedicels 2 – 4 x as long as pod
1 Flowers white; stems with less than 10 leaves and pedicels various
2 Stem leaves usually more than 10; pedicels shorter than pod
D. aurea
2 Stem leaves 1 – 5; pedicels 2 – 4 x as long as pod
D. nemorosa
3 Stem leaves all or mostly opposite; inflorescence subumbellate in fruit
D. reptans
3 Stem leaves alternate; inflorescence racemose in fruit
4 Caudex absent; stem leaves on lower 1/3 of plant; pedicels 2 – 4 times as long as pod
D. nemorosa
4 Caudex present; stem leaves usually at least 1/2 way up stem; pedicels rarely 2 times as long as pod
5 Stem leaves less than 5; fruiting pedicels spreading-ascending; mature siliques broadly lanceolate, not twisted, with thick coat of minute hairs; seeds at most 36
D. cinerea var. cinerea
5 Stem leaves usually 5 – 8; fruiting pedicels strongly ascending; mature siliques narrowly lanceolate, twisted, with stellate hairs; seeds 20 - 48
D. breweri var. cana