130 KEY AND FLORA 
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, partly filled 
with a sweet substance, slow in opening. Seeds several, flattish, 
over } in. in diameter, very hard and shining. 
1. G. dioica Koch. Kentucky Correr Tree. Tree 50 ft. or more 
in height, with rough gray bark. Leaves 2-3 ft. long, the leaflets 
vertical. Pods sometimes nearly 1 ft. long. Rich soil and river bot- 
toms, especially S. and W. 
IV. GLEDITSIA L. 
Large trees; bark dark-colored, nearly smooth. Leaves 
usually pinnately twice compound; leaflets serrate. Flowers 
somewhat moneecious, in small spike-like racemes. Calyx 
spreading, 3-5-cleft. Petals as many as the sepals and in- 
serted at the summit of the tube. Stamens 5-10, distinct, 
inserted with the petals. Ovary nearly sessile, ovoid or 
elongated. Fruit a l-or many-seeded, leathery pod.* 
1. G. triacanthos L. Honry Locust. A large tree, usually armed 
with stout, branched thorns, which are sometimes a foot or more in 
length. Leaves petioled; leaflets short-stalked, lanceolate-oblong, 
base inequilateral, smooth above, often downy below. Racemes soli- 
tary or in small clusters, drooping. Flowers inconspicuous, greenish. 
Pod linear-oblong, often 12-15 in. long by 1 in. wide, twisted, many- 
seeded, smooth and shiny, pulpy within. In rich woods. 
Vv. CERCIS L. 
Trees. Leaves simple, with stipules. Flowers in axillary clus- 
ters, somewhat papilionaceous. Calyx bell-shaped, 5-toothed. 
Stamens 10, distinct. Ovary short-stalked; ovules several. 
Fruit a flattened pod. 
1. C. canadensis L. Reppup. 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. Common on 
rich soil, especially S.* 
