Drabas and Whitlow Grass: The Genus Draba West of the Cascade Mountains of Oregon and Washington

Alaska draba (Draba stenoloba) blooming along Forest Service Road #2630 on the north side of the ridge making up Mount Pisgah, Ochoco National Forest.........June 13, 2015. Note the several leaves on the lower stems and the mostly glabrous upper stems and pedicels, which are equal to or less than the length of the fruits. These characteristics help distinguish this species from the similar Draba nemorosa.

Alaska Draba, Alaska Whitlow-grass, Slender Draba, Slender Whitlow-grass: Draba albertina (Synonyms: Draba crassifolia var. albertina, Draba crassifolia var. nevadensis, Draba stenoloba var. nana)

Rocky Mountain Draba, Snowbed Whitlow-grass, Thick-leaved Draba: Draba crassifolia (Synonyms: Draba crassifolia var. parryi, Draba parryi) - Found west of the Cascade Mountains in the mountains of the Olympic Peninsula.

Howell's Draba, Howell's Whitlow-grass, Howell's Whitlow Grass, Rosette Draba: Draba howellii -

Yellowstone Draba, Yellowstone Draba Whitlow-wort, Yellowstone Whitlow-wort: Draba incerta (Synonyms: Draba exalata, Draba incerta var. incerta, Draba incerta var. laevicapsula, Draba incerta var. peasei, Draba laevicapsula, Draba peasei) - Found west of the Cascade Mountains in the mountains of the Olympic Peninsula.

Lancefruit Draba, Lancepod Whitlow-grass, Whitlow-wort: Draba lonchocarpa (Synonyms: Draba lonchocarpa var. denudata, Draba lonchocarpa var. exigua, Draba lonchocarpa var. lonchocarpa, Draba lonchocarpa var. semitonsa, Draba lonchocarpa var. vestita, Draba nivalis, Draba nivalis ssp. lonchocarpa, Draba nivalis var. denudata, Draba nivalis var. elongata, Draba nivalis var. exigua) - Flowers white. Perennial.

Woods Draba, Woodland Whitlow-grass: Draba nemorosa (Synonyms: Draba dictyota, Draba nemoralis, Draba nemorosa var. leiocarpa, Tomostima nemorosa) -

Payson's Draba, Payson's Whitlow-grass, Trelease's Whitlow-grass: Draba novolympica (Synonyms: Draba paysonii, Draba paysonii var. treleasei) -

Alaska Draba, Alaska Whitlow-grass: Draba stenoloba (Synonyms: Draba acinacis, Draba hirta var. siliquosa, Draba nemorosa var. stenoloba, Draba stenoloba var. oligantha, Draba stenoloba var. stenoloba) -

Spring Draba, Spring Whitlow-grass, Spring Whitlow Grass: Draba verna (Synonyms: Draba verna var. aestivalis, Draba verna var. boerhaavii, Draba verna var. major, Draba verna var. verna, Erophila verna ssp. spathulata, Erophila verna var. praecox, Erophila verna var. verna) -

Drabas and Whitlow Grass West of the Cascade Mountains of Oregon and Washington

The Genus Draba