This section is from the book "Wild Flowers Of The North American Mountains", by Julia W. Henshaw. Also available from Amazon: Wild Flowers of the North American Mountains.
Stems: hoary, pubescent. Leaves: oblong-lanceolate, nearly entire. Flowers: petals notched; style minute. Fruit: pods acute, twisted when ripe, on short erect pedicels.
A plant partaking of the appearance of a weed, and closely resembling a white mustard. It has lance-shaped, toothed leaves, and the petals are notched at the apex.
Draba lonchocarpa, or Long-podded Whitlow Grass, may be recognized by its long smooth pods, which are very narrow, and more or less twisted. It is a hairy plant and grows on rock ledges at great altitudes.
Draba praealta, or Spring Whitlow Grass, is a common species which grows abundantly between four and six thousand feet.
 
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