L eguminosee Calophaca. 129 



roundish, entire, mucronate. Flower-spikes on long peduncles ; 

 flowers yellow. Siberia. 



22. ASTRAGALUS. 



A very extensive genus of herbs or dwarf often spiny 

 shrubs with unequally pinnate leaves and racemose or spicate 

 seldom umbellate flowers. Calyx tubular; teeth 5, nearly 

 equal. Petals narrow, with long claws. Pod usually 2-celled 

 longitudinally by the intrusion of a thin membrane from the 

 dorsal suture. There are between 500 and 600 species, or, 

 according to a recent monograph by Bunge, 900 to 1,000, 

 chiefly from Russian Asia, the Himalayas, and Asia Minor, 

 and extending throughout the Mediterranean region, the 

 mountains of tropical Africa and America, and temperate 

 North America. Few species are generally cultivated, but 

 many more deserve cultivation. The name was applied by the 

 ancients to some plant of this family, probably Orobus vernus, 



1. A. alopecuroldes. An herbaceous perennial about 2 feet 

 high with leaves composed of 21 to 41 ovate-lanceolate 

 petiolulate leaflets and yellow axillary flowers. The elegant 

 foliage of this species forms its chief attraction. A native of 

 Spain, blooming in Midsummer. 



2. A. Monspessulanus. Almost stemless. Leaves hairy, of 

 31 to 41 leaflets. Flowers purple, on the summit of a peduncle 

 exceeding the leaves. This is a very pretty species and the 

 most common in gardens. A native of Europe, flowering in 

 June or July. 



3. A. Hypoglottis. Milk Vetch. An indigenous dwarf 

 species with from 17 to 25 small hairy leaflets and purplish 

 flowers on long axillary peduncles. 



4. A. Onobrychis. Diffuse or erect. Leaflets 8- to 12- 

 jugate, hairy. Flowers purple, in dense spikes ; peduncles 

 longer than the leaves. One of the most beautiful species. 

 A native of Central Europe, flowering in Summer. 



TRIBE Vl.HEDY^SARE^. 

 Habit variable. Pod transversely jointed. 



23. CORONlLLA. 



Herbs or undershrubs, usually glabrous. Leaves impari- 

 pinnate. Flowers yellow or purple or pink and white, 



