Dicotyledones. 69 



IX. GYMNOCLADUS. Kentucky Coffee Tree. 

 (Gr., gymnos, naked ; klados, branch, alluding to the somewhat naked branches.) 



Trees with bipinnate leaves and regular, dioecious, or polygamous, 

 whitish flowers in terminal racemes. Calyx tubular, 5-lobed; petals 

 usually 5, oblong or oval, inserted at the summit of the calyx tube; 

 stamens 10, distinct, shorter than the petals. Pod oblong, 2-valved, 

 thick and leathery, pulpy between the seeds. 



i. Gymnocladus Canadensis, Lam. KENTUCKY COFFEE TREE. Becoming 

 a large tree with rough bark. The bipinnate leaves quite large, of 7-15 leaflets, the 

 leaflets mostly ovate, acuminate, i to 3 inches long. Racemes many-flowered. 

 Pods 5 to 10 inches long. Rich woods. 



X. GLEDITSCHIA. Honey Locufet. 



(Named for J. G. Gleditsch, botanist.) 



Becoming large, thorny trees. Leaves evenly once or twice pinnate. 

 Flowers small, greenish, in slender, axillary racemes, polygamous. 

 Calyx campanulate, 3-5-cleft; petals 3-5, inserted on the summit of 

 the calyx tube; stamens 6-10, distinct. Pod flat, i -many-seeded. 



i. Gleditschia triacanthos, L. (Gr., tri, three; akantha, thorn.) THREE- 

 THORNED ACACIA or HONEY LOCUST. Stems often armed with numerous stout, 

 simple, or branching thorns. Leaflets oval to oblong-lanceolate, about i inch long. 

 Pod i foot or more long, shining and twisted, many-seeded ; a sweet pulp between 

 the seeds. Woods and pastures. 



XI. SCHRANKIA. Sensitive Brier. 

 (Named for F. P. Schrank, botanist.) 



Perennial herbs or shrubs, prostrate or procumbent, with bipinnate 

 leaves, which are somewhat sensitive, the leaflets small and numerous. 

 Flowers perfect or polygamous, borne in axillary, peduncled heads or 

 spikes. Calyx 5-toothed, minute ; petals united to the middle, 5-cleft 

 above; corolla pink or purple. Stamens 8-12, distinct or united at the 

 base. Plant beset with recurved prickles. Pods spiny, linear, acute, or 

 acuminate. 



i. Schrankia uncinata, Willd. (L., uncinatus, barbed.) SENSITIVE BRIER. 

 Herbaceous perennial, branches decumbent, 2 to 4 feet long, very prickly. Stems 

 grooved and angled. Pinnae 4-8 pairs. Leaflets obliquely elliptic, 8-15 pairs, 

 prominent elevated veins beneath. Heads very dense, globose. Flowers pink. 

 In dry soil. 



