Spring Flora of Oklahoma 
09 
nate. Flowers small, greenish, in slender, axillary 
racemes, polygamous. Calyx campanulate, 3-5-cleft. Pet¬ 
als 3-5, inserted on the summit of the calyx tube. Sta¬ 
mens 6-10, distinct. Pod flat, 1-many-seeded. 
Pods linear-oblong, elongate, many-seeded. 
1. G. triacanthos. 
Pods obliquely oval, short, 1-seeded. 2. G. aquatica. 
1. Gleditsia. triacanthos L. Honey Locust. A large tree with 
rough bark, usually armed with numerous, stout, branching, or simple 
thorns. Leaves petioled, 1-2 pinnate. Leaflets short-stalked, oblong- 
lanceolate or oval, obtuse at each end, inequilateral at the base, 
glabrous above, often pubescent on the veins beneath, crenulate. 
Flowers greenish. Pod linear-oblong, 12'-18' long, l'-l%' wide, 
stalked, glabrous and shining, twisted, pulpy within, sometimes eaten. 
In woods. May-July. North and east part of state. 
2. Gleditsia aquatica Marsh. Water or Swamp Locust. A tree, 
the thorns usually simple. Leaflets ovate-lanceolate or lanceolate in 
outline, the margins more conspicuously crenulate. Pod obliquely 
oval, flat, glabrous, narrowed at each end, slender-stalked, l'-l%' 
long, 9"-12" wide, not pulpy within. 
In swamps. May-July. Oklahoma County. 
IV. GYMNOCLADUS Lam. 
Trees with bi-pinnate leaves without stipules. Flow¬ 
ers regular, whitish, dioecious or somewhat moncecious-, 
in racemes at the ends of the branches. Calyx tube rather 
long, its 5 lobes spreading. Petals oblong, all alike, in¬ 
serted with the stamens on the throat of the calyx. Sta¬ 
mens of the fertile flowers usually not pollen-bearing. 
Pod hard, flat, partly filled with a sweet substance, slow 
in opening. Seeds several, flattish, over V 2 ' in diameter, 
very hard and shining. 
1. Gymnocladus dioica (L.) Koch. Kentucky Coffee-tree. 
A large forest tree, with rough, gray bark. Leaves large, bi-pinnate, 
petioled. Pinnae 5-9, odd or evenly pinnate. Leaflets 7-15, ovate, 
acute or acuminate at the apex, rounded at the base, glabrous, or 
pubescent on the veins beneath, ciliate on the margins. Pod 5'-10' 
long, about 15"-21" wide. 
Rich woods. May-June. Oklahoma, Woods, Custer and Cimarron 
counties. 
