300 ORDER 46. LEGUMINOS^E. 



6. GYMNOC'LADUS, Lam. COFFEE TREE. (Gr. yvfj,vo^ naked, 

 Khddog, a shoot ; for its coarse, naked shoots in winter.) Flowers ? $ . 

 $ Calyx tubular, 5-cleft, equal ; petals 5, inserted into the summit of 

 the tube ; stamens 10, distinct, ? Calyx and corolla as above; style 

 1 ; legumes 1 -celled, oblong, very large, pulpy within. A slender, un- 

 armed tree, with unequally bipinnate Ivs. Lfts. ovate, acuminate. 



G. Canadensis Lam. Grows in Western N. Y., Ohio, Ind. S. to Tenn., on the 

 borders of lakes and rivers. Height 50f, with a trunk 15' diam., straight and sim- 

 ple to the height of 25f, covered with a rough, scaly bark, and supporting a rather 

 small but regular head. The compound Ivs. are 2 to 3f long, and 15 to 20' wide, 

 being doubly compounded of a great number of dull green leaflets. Single leaf- 

 lets often occupy the place of some of the pinnae. Fls. greenish- white, in long 

 racemes, succeeded by very large curved pods containing each several round, 

 depressed, brown, polished, and very hard seeds. May Jl. 



7. GLEDITS'CHIA, L. HONEY LOCUST. (For John G. Glcditsch, a 

 botanical writer, Leipzig.) Flowers ? $. Sepals equal, 3 to 5, 

 united at base ; petals 3 to 5 ; stamens 3 to 5, distinct, opposite the 

 sepals, sometimes by abortion fewer or ; style short, often abortive ; 

 legume continuous, compressed, often intercepted between the seeds by 

 a quantity of sweet pulp. Trees, with supra-axillary, branched spines. 

 Lvs. abruptly pinnate and bipinnate, often in the same specimen. Fls. 

 small, green, racemous. 



1 G. triacdnthus L. Branches armed with stout, triple spines ; Ifts. alternate, ob- 

 long-lanceolate, obtuse; leg. linear-oblong, compressed, many-seeded, intervals 

 filled with sweet pulp. Penn. to Mo. and La. In favorable circumstances it attains 

 the height of 7 Of, undivided half ifc3 length, with a diameter of 3 to 4f. The 

 thorns are 2 to 12' long, ligneous, numerously branched, forming horrid masses 

 along the trunk. Foliage light and elegant. Lfts. about 18, 1 to 1^-' long, as 

 wide, 1, 2 or 3 of them frequently transformed, either partly or wholly, into smaller 

 leaflets ( 290). Fls. succeeded by flat, twisted, hanging pods 12 to 18' long, of 

 a dull red. Sds. flat, hard, brown, imbedded in a fleshy substance, at first sweet, 

 but becoming sour. Jn. The wood is very heavy. 



2 G. monosperma Walt. WATER LOCUST. Armed with few, slender, mostly 

 simple spines; Ifls. ovate-oblong; leg. broadly oval, without pulp, one-seeded. 

 Swamps, S. Car. to Fla. and La., not common. A tree of smaller dimensions than 

 the former, with a smoother bark. Pods about 2' long with the siipe, 1' wide. 

 Fls. greenish, in ament-like racemes like the other. Jn. 



8. CAS'SI^, L. SENNA. (Hebrew, Katzioth.) Sepals 5, scarcely 

 united at base, nearly equal ; petals 5, unequal, but not papilionaceous ; 

 stamens distinct, 10, or by abortion fewer, anthers opening by terminal 

 pores, the three upper often sterile ; legume many-seeded, 1-celled or 

 many-celled transversely. Trees, shrubs or herbs. Lvs. simply, abruptly 

 pinnate. 



Stam. 5 or 10, all perfect Sepals acute. Lfts. small Nos. 1, 2 



Stam. 10, the 3 upper abortive. Sep. obtuse. Lfts. large, (a) 



a Gland on the petiole at or near the base .Nos. 3, 4 



a Gland on the rachis between the two lowest leaflets Nos. 5, 6 



1 C. Chamsechrista L. SENSITIVE PEA. Lfts. 8 to 12 pairs, oblong-linear, 

 obtuse, mucronate ; fls. large, pedicillate, 2 or 4 in each fascicle; anth. 10, un- 

 equal, all fertile. (I) An elegant plant in dry soils, Mass., Mid., W. and S. States. 

 St. ^ to 2f high, round, pubescent. Lfts. crowded, 4 to 8" by 1 to 2|", smooth, 

 subsessile. Fls. 15 to 18" broad. Bracts lance-subulate, as are also the sti- 

 pules, persistent. Petals bright yellow, the 2 upper ones with a purple spot. 

 Aug. The leaves possess considerable irritability. 



2 C. iiictitans L. WILD SENSITIVE PLANT. Lfts. 6 to 15 pairs, oblong-linear, 

 obtuse, mucronate, sessile ; 'fls. small, 2 or 3 in each subsessile fascicle ; sta. 5, sub- 



