KRA MERIA CEA E. 531 



1. Gleditsia triacanthos L. HONEY OR SWEET LOCUST. THREE-THORNED 

 ACACIA. (I. F. f. 2041.) A large tree, with rough bark, usually armed with 

 stout branching or simple thorns. Leaves petioled, i-2-pinnate; leaflets short- 

 stalked, oblong-lanceolate or oval, obtuse at each end, inequilateral at the base, 

 often pubescent on the veins beneath, crenulate, 1.5-3 cm. long; racemes droop- 

 ing, dense, 7-13 cm. long; flowers greenish, about 4 mm. broad; pod 3-5 dm. 

 long, 2.5-4 cm. wide, stalked, shining, twisted, pulpy within. In woods, W. N. Y. 

 and Ont. to S. Dak., Ga., Kans. and Tex. Nat. and extensively planted further 

 east. May-July. 



2. Gleditsia aquatica Marsh. WATER OR SWAMP LOCUST. (I. F. f. 2042.) 

 A tree, with maximum height of about 20 m. Foliage similar to that of the pre- 

 ceding, but the leaflets thicker, darker green, usually larger, ovate -lanceolate or 

 lanceolate in outline, the margins more crenulate; racemes drooping, elongated; 

 pod glabrous, narrowed at each end, slender-stalked, 2.5-4 cm. long, 1.8-2.5 cm< 

 wide, not pulpy within. In swamps, Ind. to Mo., S. Car., Fla. and La. July.j 



5. GYMNOCLADUS Lam. 



Trees, with bipinnate leaves, and showy white dioecious or polygamous flow- 

 ers in terminal racemes. Calyx tubular, 5-lobed, the lobes narrow, nearly equal. 

 Petals 5 (rarely 4), oblong or oval, nearly equal, imbricated, inserted at the top of 

 the calyx-tube. Stamens 10, distinct, shorter than the petals and inserted with 

 them; filaments pubescent; anthers all alike, longitudinally dehiscent. Ovary rudi- 

 mentary, or none in the staminate flowers, sessile and many-ovuled in the pistil- 

 late and polygamous ones; style straight. Pod oblong, thick, large, coriaceous, 

 flat, pulpy between the seeds, 2-valved. [Greek, naked-branch.] A monotypic 

 genus of eastern N. A. 



i. Gymnocladus dioica (L.) Koch. KENTUCKY COFFEE-TREE. (I. F. f. 

 2043.) A large forest tree, with rough bark. Leaves large, petioled ; pinnae 

 5-9; leaflets 7-15 (or the lowest pair of pinnae of but a single leaflet), ovate, acute 

 or acuminate at the apex, rounded at the base, glabrous or pubescent on the veins 

 l>eneath, ciliate, 2-8 cm. long; racemes many-flowered, elongated; flowers slender- 

 pedicelled, 16-18 mm. long; pod 1.2-2.5 dm. l n g> about 5 cm. wide, the valves 

 thick and coriaceous. Rich woods, S. Ont. to Penn., Tenn., S. Dak. and the Ind. 

 Terr. May-June. 



Family 16. KRAMERIACEAE Dumort. 

 Krameria Faintly. 



Pubescent herbs, or low shrubs, with alternate simple or digitately 

 3-foliolate leaves, and purple or purplish, irregular perfect flowers. 

 Peduncles 2-bracted at or above the middle. Stipules wanting. Sepals 

 4 or 5, usually large, the outer one commonly wider than the others. 

 Petals usually 5, smaller than the sepals, the 3 upper ones long-clawed, 

 often united by their claws, or the middle one of the 3 wanting, the 2 

 lower ones reduced to suborbicular fleshy glands. Stamens 3 or 4, 

 monadelphous, at least at the base ; anther-sacs opening by a terminal 

 pore. Ovary i -celled, or partly 2-celled ; ovules 2, collateral, anatropous, 

 pendulous ; style slender, acute or truncate. Fruit spiny, indehiscent, 

 i -seeded. Seed without endosperm ; cotyledons fleshy. Only one genus, 

 with about 15 species, distributed from the southern U. S. to Chile. 



i. KRAMERIA Loefl. 



[In honor of Johann Georg Heinrkrh Kramer, an Austrian physician of the 

 last Century.] 



i. Krameria secundiflora DC. LINEAR-LEAVED KRAMERIA. (I. F. f. 

 2044.) A perennial herb from a thick woody root, the stems often 3 dm. long or 

 more. Leaves linear, linear-lanceolate or linear-oblong, sessile, simple, entire, 

 about 2.5 cm. long, acute, tipped with a minute prickle; peduncles solitary, axil- 

 lary, i-flowered, sometimes secund, bearing 2 leaf-like bracts just below the 



