PULSE FAMILY 137 
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. Pseudo-Acacia 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. Introduced, 
and quite common; wood very durable when exposed to the weather, 
and extensively used for posts.* 
XVIII. WISTERIA Nutt. (BRADLEYA) 
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 seythe-shaped. Pod long, stalked, leathery, 
2-valved, several-seeded.* 
1 W. frutescens Poir. Wisterra. 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, wings with a short and a long appendage at the base. 
Pod 2-3 in. long, 2-4-seeded. River banks S. Often cultivated for 
ornament.* 
2. W. chinensis DC. Curxese Wisterra. Larger and faster 
growing than No. 1. Racemes longer and more slender. Wing 
appendage at one side only of base. Seldom fruiting in this region. 
Cultivated from China or Japan. 
XIX. ASTRAGALUS L. 
Mostly perennial herbs. Leaves odd-pinnate. Flowers in 
spikes or racemes. Calyx 5-toothed. Petals long, erect, with 
claws. Standard narrow. Stamens diadelphous (9 and 1). 
Pod usually swollen, sometimes fleshy and eatable, several— 
many-seeded. [A large and very difficult genus; mostly of far 
western species. | 
