12 Wyoming Experiment Station. 



which enclose the seed proper are thick and scurfy, and have 

 broad, rounded, free terminal portions. It is very common in 

 the Red Desert, and occurs on clayey alkaline flats elsewhere in 

 the state. 



Winter Fat (Burotia lanata (Pursh) Moq.) 



A perennial undershrub, one or two feet high, growing in 

 dry gravelly soil on the plains and in the foothills. It has slen- 

 der, woolly twigs and narrow, grayish, velvety leaves. To- 

 ward the end of the growing season the stems become loaded 

 down with white, cottony seeds. This plant is highly prized 

 by stockmen, especially for winter forage. Both the stems and 

 cottony seeds are greedily eaten by stock, and wherever cattle 

 have free range the plant is kept closely browsed down to the 

 ground. 



Grayia ( Grayia sp inosa (Hook.) Moq.) 



A somewhat mealy undershrub, one to three feet high, with 

 greenish leaves which are oblong or somewhat narrower. Its 

 seeds (technically fruits) are flat and nearly round, white or 

 pinkish in color and less than half an inch in diameter. Grayia 

 occurs in alkaline soil in the central and southeastern part of 

 Wyoming. 



Greasewood (Sarcobatusvermiculatus (Hook.) Torr.) 



An erect scraggy shrub, two to eight feet high, with white 

 bark, rigid spreading branches and small worm-like leaves. 

 The seeds are rendered quite conspicuous by the horizontal, 

 membranous, veined wings. Greasewood is a characteristic 

 shrub of alkali flats and clayey bluffs throughout the state. 



HYDRANGEA FAMILY. 



( Hydrangeaceae ) . 



To this family belong the garden and greenhouse hydran- 

 geas, the wild and cultivated syringas or mock oranges of the 

 Eastern states and a number of native shrubs occurring in the 



