PULSE FAMILY 129 
(a) Leaflets usually many pairs. Style slender, bearded only 
at the tip or all round the upper portion. Pod 2- 
several-seeded. Vicia, XXI 
(0) Leaflets few or several pairs. Style bearded along one 
face only, Pod several-seeded. Lathyrus, XXII 
(c) Leaflets 1-8 pairs. Style enlarged above, grooved on 
the back. Pod several-seeded; seeds large, globular or 
nearly so. Pisum, XXIII 
I. DESMANTHUS Willd. (ACUAN) 
Shrubs. or perennial herbs. Stems erect or diffuse, smooth. 
Leaves abruptly twice-pinnate; stipules small. Flowers in 
heads or spikes, on axillary peduncles, the upper bisexual, the 
lower often staminate or neutral. Calyx 5-toothed. Corolla of 
5 distinct petals or 5-cleft. Stamens 5-10, distinct. Ovary 
nearly sessile, flat, several-seeded.* 
1. D. illinoensis Mac M. Desmantuus. Stem erect or ascend- 
ing, smooth, 1-4 ft. high. Pinne 6-14 pairs, each with a minute 
gland at the base; leaflets 20-30 pairs, small, linear. Heads globose. 
Stamens 5. Pods several, on a peduncle 2-3 in. long, curved, flat, 
2-valved, 3-6-seeded. Open, sandy fields.* 
II. SCHRANKIA Willd. (MORONGIA) 
Perennial herbs. Stems reclining or prostrate, prickly, 2-5 
ft. long. Leaves twice-pinnate; stipules bristly. Flowers bi- 
sexual or somewhat moneecious, in axillary peduncled heads. 
Calyx minute. Corolla tubular, 5-cleft. Stamens 8-10, dis- 
tinct. Pod long, prickly, 1-celled.* 
1. S. uncinata Willd. ‘Sensitive Brier, SENSITIVE Rose, SHAME 
Vine. Plant covered with hooked prickles. Leaflets elliptical, with 
a conspicuous network of veins beneath; leaves closing gradually 
after being touched. Flowers rose-colored. Pods nearly cylindrical, 
2in.long. Dry, sandy soil and rolling prairies, especially S. and W. 
ll. GYMNOCLADUS Lam. 
A large, thornless tree, its twigs few and stout. Leaves very 
large, twice pinnately compound, without stipules. Flowers 
actinomorphic, whitish, dicecious or somewhat moneecious, in 
