DICOTYLEDONOUS PLANTS 127 
Flowers blue or purple. Calyx-teeth short, nearly equal, downy. 
Pod glandular. River banks.* 
XVI. WISTARIA, Nutt. 
Tall, twining shrubs. Leaves odd-pinnate. Racemes ter- 
minal. Flowers large and showy. Calyx 2-lipped, the upper 
lip 2-cleft, short, the lower longer and 3-cleft. Standard 
large, round, with 2 calloused ridges at the base, wings 
eared at the base, keel scythe-shaped. Pod long, stalked, 
leathery, 2-valved, several-seeded.* 
1. W. frutescens, Poir, WuistTariaA. Stem climbing 30-40 ft., 
often 2-3 in. in diameter at the base; branches and leaves downy 
when young, becoming smoother with age. Leaves short-petioled ; 
stipules minute; leaflets 9-17, ovate-lanceolate, acute at the apex, 
rounded at the base. Racemes large, densely flowered. Calyx 
downy. Corolla lilac-purple, one wing with a short and one with a 
long appendage at the base. Pod 2-3 in. long, 2—4-seeded. River 
banks 8S. Often cultivated for ornament.* 
2. W. chinensis, DC. Cuinese Wistaria. Larger and faster 
growing than No.1. Racemes longer and more slender. Wing- 
appendages equal. Seldom fruiting in this region. Cultivated from 
China or Japan. 
XVII. ROBINIA, L. 
Trees or shrubs. Leaves odd-pinnate ; stipules often spiny. 
Flowers showy, in axillary racemes. Calyx short, 5-toothed, 
the two upper teeth shorter and partially united. Standard 
large, orbicular, reflexed, keel obtuse. Stamens diadelphous. 
Style bearded on one side. Pod compressed, several-seeded.* 
1. R. Pseudacacia, L. Brack Locust. A tree of medium size; 
bark rough and nearly black; twigs and leaves smooth. Leaflets 
9-15, ovate or oblong, obtuse and slightly mucronate at the apex; 
stipules forming persistent spines. Racemes loose, pendulous, 3-5 in. 
long. Flowers white, fragrant. Pod smooth, 4—8-seeded. Intro- 
duced and quite common; wood very durable when exposed to the 
weather, and extensively used for posts.* 
XVII. ASTRAGALUS, Tourn. 
Mostly perennial herbs. Leaves odd-pinnate. Flowers in 
spikes or racemes. Calyx 5-toothed. Petals long, erect, with 
