150 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, fat, partly tilled 
with a sweet substance, slow in opening. Seeds several, flattish, 
over Lin. in diameter, very hard and shining. 
1. G. dioica Koch. Kenrucky Corres 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 5S. and W. 
IV. GLEDITSIA L. 
Large trees; bark dark-colored, nearly smooth. Leaves 
asually pinnately twice compound; leaflets serrate. Flowers 
somewhat monoecious, in small spike-hke racemes. Calyx 
q: oF > ee: j 
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 1-or many-seeded, leathery pod.* 
1. G. triacanthos L. Honey Locusr. A large tree, usually armed 
with stout, branched thorns, which are sometimes a foot or more in 
length. Leaves petioled; leaflets short-stalked, laneeolate-oblong, 
base inequilateral, smooth above, often downy below. Racemes soli- 
tary or in sinall clusters, drooping. Flowers incouspicuous, greenish. 
Pod linear-oblong, often 12-15 in. long by Lin. wide, twisted, many- 
seeded, smooth and shiny, pulpy within. In rich woods. 
V. 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. 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 hefore the leaves, 
pinkish-purple. Pod oblong, compressed, many-seeded. Common on 
rich soil, especially 8 
