LEGUMINOS.E. (PULSE FAMILY.) 109 



4. C. nictitans, L. (WILD SENSITIVE-PLANT.) Leaflets 10-20 

 pairs, oblong-linear; flowers (very small) on very short pedicels; anthers 5, nearly 

 equal; style very short. Sandy fields, New England, near the coast, to 

 Illinois and southward. Aug. 



33. GYM]V6CL,ADUS, Lam. KENTUCKY COFFEE-TREE. 



Flowers dioecious, regular. Calyx tubular below, 5-cleft. Petals 5, oblong, 

 equal, inserted on the summit of the calyx-tube. Stamens 10, distinct, short, 

 inserted with the petals. Pod oblong, flattened, hard, pulpy inside, several- 

 seeded. Seeds flattish. A tall large tree, with rough bark, stout branchlets, 

 not thorny, and very large unequally twice-pinnate leaves. Flowers whitish, i.n 

 axillary racemes. (Name from ytyxi/oy, naked, and JcXdoor, a branch, alluding 

 Jo the stout branches destitute of spray.) 



1. G. Canadensis, Lam. Rich woods, by rivers, W. New York and 

 Penn. to Illinois and southwestward. June. Cultivated as an ornamental 

 tree : timber valuable. Leaves 2 -3 long, with several large partial leafstalks 

 bearing 7-13 ovate stalked leaflets, the lowest pair with single leaflets. Pod 

 6'- 10' long, 2' broad; the seeds over ' across. 



34. GLEDITSCHIA, L. HONEY-LOCUST. 



Flowers polygamous. Calyx of 3 -5 spreading sopals, united at the base. 

 Petals as many as the sepals, and equalling them, the 2 lower sometimes united 

 Stamens as many, distinct ; inserted with the petals on the base of the calyx. 

 Pod flat, i - many-seeded. Seeds flat. Thorny trees, with abruptly once or 

 twice pinnate leaves, and inconspicuous greenish flowers in small spikes. 

 Thorns above the axils. (Named in honor of Gleditsch, a botanist contem- 

 porary with Linnaeus.) 



1. G. triacsiiitlios, L. (THREE-THORNED AOACIA, or HONEY-LO- 

 CUST.) Thorns stout, often triple or compound; leaflets lanceolate-oblong, some- 

 what serrate; pods linear, elongated (l-l long), oftea twisted, filled with 

 *weet pulp between the seeds. Rich woods, Penn. to Illinois and southwest- 

 <ard. June. Common in cultivation as an ornamental tree, and for hedges. 



2. G. liionosperma, Walt. (WATER-LOCUST.) Thorns slender; 

 uostly flmple ; leaflets ovate or oblong; pods oval, \-seedtd, pulpless. Swamps, 



and southwestward. July. A small tree. 



SUBORDER III. MIMOSEJE. THE MIMOSA FAMILY. 



35, DESMAN THUS, Willd. DESMANTHUS. 



Flowers perfect or polygamous. Calyx campanulate, 5-toothed. Petals !>, 

 distinct. Stamens 5 or 10. Pod flat, membranaceous or somewhat coriaceous, 

 several-seeded, 2-valved, smooth. Herbs with twicc-pinnn^e leaves of numer- 

 ous small leaflets, and with one or more glands on the petiole, setaceous stipules, 

 and axillary pedunc'es bearing a head of small greenish-white flowero. (Name 

 composed of StV/ia i bond, and avGos, flower.} 



