Brassicaceae
Arabis drummondii

Drummond's Rockcress

Stems erect, branched or unbranched. Leaves mostly basal, 1–3 in., with petioles, lance-shaped with sharp tip, sparsely toothed to entire; upper leaves clasping stem, 1/2–2 in., narrower, without hairs. Flowers white or pink. Seedpods erect, with rounded tip, crowded, 2–4 in. long, hairless, on erect stalk. Grows in open areas on gravel or talus at mid- to alpine elevations. The few interesting hairs on basal leaves can be seen with a hand lens; they are U-shaped and attached at center. Similar A. furcata, with no petioles on lower leaves, has smaller sessile upper leaves, similar white flowers; grows in rocky places, bluffs, talus slopes, at low elevations.

  • Rarity: Locally Common
  • Flowering Time: All Spring
  • Life Cycle: Biennial, Perennial
  • Height: 4--35 inches
  • Habitat: Subalpine
  • Found In: Siskiyous, Steens, Wallowas, Mt. Rainier NP, Olympic NP, N Cascades NP
  • Native: Yes