MUSTARD FAMILY. Cruciferae. 
The fragrant flowers, each about three-quarters of an inch 
across, form a handsome cluster, about three inches across. 
The calyx is yellow, the pistil green, and the anthers brown. 
The conspicuous, four-sided pods are spreading or erect, 
from one to five inches long, with a stout beak. In the 
high mountains the orange-color gives way to the variety 
perénne, with lemon-colored flowers, perhaps commoner 
than the orange, not so tall, and wonderfully handsome in 
the Wasatch Mountains, around Mt. Rainier and similar 
places, and widely distributed. The Cream-colored Wall- 
flower, E. capitdtum, blooms early, growing near the coast; 
the flowers large, handsome, but not sweet-scented. 
There are a good many kinds of Thlaspi, of temperate 
and arctic regions: smooth low plants, mostly mountain; 
root-leaves forming a rosette; stem-leaves more or less 
_ arrow-shaped and clasping; flowers rather small, white or 
purplish; sepals blunt; style slender, sometimes none, with 
a small stigma; pod flat, roundish, wedge-shaped, or heart- 
shaped, with crests or wings. 
A rather pretty little plant, with several 
Wild Candytuft, fower-stalks, springing from rosettes of 
Pennycress : 
Thléspi glaicum ‘eaves, dull-green, somewhat purplish 
White and thickish, smooth and _ obscurely 
Spring,summer, toothed, all more or less covered with a 
autumn rT; Te : 
Wockoonees bloom”’; the flowers small, slightly 
Utah fragrant, forming clusters less than an inch 
across, the white petals longer than the 
thin, greenish sepals. This grows on moist, mountain 
slopes. T. alpéstre, of the Northwest, is similar, but with- 
out ‘bloom.’ 
There are only a few kinds of Dithyrea, grayish, hairy 
plants, resembling Biscutella of the Mediterranean, with 
yellowish or whitish flowers. 
Dithyrea Wislizéns . A little desert plant, from six to twelve 
White inches tall, with branching stems; pale, 
Summer yellowish-green, downy leaves, about an 
Ariz., New Mex., inch long, with wavy or toothed margins; 
Tex., Okla., Ark. Hall white flowers and funny little seed- 
pods, sticking out at right-angles from the stem. This 
grows at an altitude of three to four thousand feet and is 
found in the Petrified Forest. 
There are many kinds of Streptanthus, difficult to dis- 
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