120 FOUNDATIONS OF BOTANY 
1. D. brachylobus, Benth. DrsmANTHus. 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 glo- 
bose. Stamens 5. Pods several, on a peduncle 2-3 in. long, curved, 
flat, 2-valved, 3-6-seeded. Open, sandy fields.* 
Il. SCHRANKIA, Willd. 
Perennial herbs ; stems reclining or prostrate, prickly, 2-5 
ft. long. Leaves twice-pinnate ; stipules bristly. Flowers 
perfect 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 Ross, | 
SHAME VINE. Plant covered with hooked prickles. Leaflets ellip- 
tical, with a conspicuous network of veins beneath; leaves closing 
gradually after being touched. Flowers rose-colored, Pods nearly 
cylindrical, 2 in. long. Dry, sandy soil and rolling prairies, espe- 
cially S. and W. 
Ill. CERCIS, L. 
Trees. Leaves simple with stipules. Flowers in axillary 
clusters, papilionaceous. Calyx bell-shaped, 5-toothed. Sta- 
mens 10, distinct. Ovary short-stalked; ovules several. 
Fruit a flattened pod. 
1. C. canadensis, L. Repsup. A small tree, 10-20 ft. high, wood 
hard but weak, bark smooth, dark-colored. Leaves broadly cordate, 
abruptly acute, rather thick, very smooth above, often slightly 
downy below. Flowers several in a cluster, appearing before the 
leaves, pinkish-purple. Pod oblong, compressed, many-seeded. Com- 
mon on rich soil, especially S.* 
IV. GYMNOCLADUS, Lam. 
A large, thornless tree, its twigs few and stout. Leaves 
very large, twice pinnately compound, without stipules. 
Flowers regular, whitish, dicecious or somewhat monecious, 
in racemes at the ends of the branches. Calyx-tube rather 
long, its 5 lobes spreading. Petals oblong, all alike, inserted 
with the stamens on the throat of the calyx. Stamens of 
the fertile flowers usually not pollen-bearing. Pod hard, flat, 
