320 Yellow to Orange Flowers 



GOLDEN WHITLOW GRASS 



Draba aurca. Mustard Family 



Stems: branching, pubescent, leafy to the inflorescence. Leaves: 

 basal ones in tufts, spatulate, obtuse, slightly dentate; stem-leaves ob- 

 long, acute. Flowers: yellow, petals twice the length of the calyx, en- 

 tire. Fruit: pods acute, at length slightly twisted. 



A plant that resembles a Treacle Mustard, but is much 

 smaller and has a rosulate tuft of leaves at the base. Tiny 

 single leaves also grow up on the branching stems, and the 

 little deep yellow flowers grow in close clusters. 



Draba alpina, or Alpine Whitlow Grass, is a tiny species 

 found at extremely high altitudes. The leaves are all basal 

 and grow in a dense tuft, while the tiny clusters of little 

 yellow flowers are set on the top of short naked stalks. 

 The whole plant is hairy and seldom exceeds four inches 

 in height. 



Draba nivalis, or Arctic Whitlow Grass, has numerous 

 slender matted branches, and lance-shaped hairy leaves 

 which have a strongly marked mid-nerve. The flowers are 

 yellow and inconspicuous, and the whole plant is covered 

 with tiny hairs and a whitish bloom. It grows at high 

 altitudes. 



Draba glacialis, or Pale Yellow Whitlow Grass, grows on 

 the summits of many mountains. It has strongly keeled 

 leaves and the petals are pale yellow, becoming darker at 

 the base. 



BLADDER-POD 



Physaria didymocarpa. Mustard Family 



Stems: decumbent or ascending, slender, simple. Leaves: spatulate, 

 the basal ones obtuse, entire, narrowed into margined petioles ; stem- 

 leaves nearly sessile, acute, much smaller. Flowers: yellow, in ter- 



