Leguminose—Calophaca. 129 
roundish, eutire, 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 vérnus. 
1. A. alopecuroides.—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. Monspessuldnus.—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. Hypogléttis. Milk Vetch.—An indigenous dwarf 
species with from 17 to 25 small hairy leaflets and purplish 
flowers on long axillary peduncles. 
4. A. Onobrichis.—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. 
Tre VI.-HEDYSAREM. 
Habit variable. Pod transversely jointed. 
23. CORONILLA. 
Herbs or undershrubs, usually glabrous. Leaves impari- 
pinnate. Flowers yellow or purple or pink and white, 
K 
