MUSTARD FAMILY. Craciferae. 



There are a good many kinds of Thely podium, native; 

 of North America, all western or southwestern; mostlj 

 smooth plants, the leaves usually with leaf-stalks, th< 

 flowers in clusters; stamens long, conspicuous, with verj 

 narrow, arrow-shaped anthers; pods long, cylindrical o: 

 four-sided, often twisted, sometimes on a slender stalk 

 seeds oblong, flatiish, in one row in each cell. 

 Thel podium This has small flowers, but often grow; 



toruldsum in sucn quantities on the flats near Sail 



Lilac Lake that it tints the fields with purple, 



Spring, summer The purplish stem is from twelve to fif teer 

 West, etc. inches tall and the leaves are light bluish- 



green and very smooth, the root-leaves with long leaf- 

 stalks, and the stem-leaves arrow-shaped and clasping al 

 base. The flowers are about half an inch across, with a 

 purplish-tinged calyx and pale pinkish-lilac petals, and form 

 flat-topped clusters. The pods are spreading and rathei 

 knobby. This usually grows on dry hills, reaching an al- 

 titude of over nine thousand feet, as far east as Wyoming, 



There are many kinds of Arabis, widely distributed, 

 with small, white or purplish flowers. 



Fendler's Arabis ThiS iS a mther pretty plant ' a f Ot OI 

 Arabis Fendlert mor e tall, with more or less hairy stems 

 Magenta and leaves and pretty clusters of magenta 



Spring flowers, each about a quarter of an inch 



across. It grows on the rim of the Grand 

 Canyon. 



There are many kinds of Erysimum, most abundant in 

 Europe and Asia. They are usually biennial or perennial, 

 more or less downy; mostly with yellow flowers; the pods 

 long, narrow and squarish or flattish, rarely round, with 

 numerous seeds, in one row. In Europe these plants often 

 grow in the crannies of old walls, hence the common name. 

 The vivid glowing orange of these 

 flower WaU ~ nand some flowers is exceedingly effective 

 Erysimum among the dark tree-trunks of the moun^ 



dsperum tain forests where they often grow. They 



Orange, lemon- are widely distributed as far east as Ohio. 



Sprinl summer The St Ut ' P ur P lish stems are f rom one to 



West, etc. two feet tall and the long, narrow leaves, 



often toothed, are apt to be purplish on 



the under side, and both stem and leaves are rather rough. 



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