LEGUMINOS.E. (PULSE FAMILY.) 127 



the branches. Stipules obsolete. Base of the petioles hollow, enclosing the 

 leaf-buds of the next year. Bracts minute and fugacious. (Name from /cAoSos, 

 a branch, and Opava-ros, brittle.) 



1 . C. tinctdria, Raf. Sometimes 50 high ; pods 3 - 4' long. Rich hill- 

 sides, central Ky. and Tenn. to N. C. Also in cultivation. The wood yields 

 a yellow dye. 



4. SOPHORA, L. 



Calyx bell-shaped, shortly 5-toothed. Standard rounded; keel nearly 

 straight. Stamens distinct or nearly so. Pod coriaceous, stipitate, terete, 

 more or less constricted between the seeds, in dehiscent. Seeds subglohose. 

 Shrubby or ours an herbaceous perennial, the leaves pinnate with numerous 

 leaflets, and flowers white or yellow in terminal racemes. (Said by Linnaeus 

 to be the ancient name of an allied plant.) 



1. S. sericea, Nutt. Silky-canescent, erect, 1 high or less; leaflets ob- 

 long-obovate, 3 - 6" long ; flowers white ; pods few-seeded. Central Kan. to 

 Col., Tex., and Ariz. 



5. CROTALARIA, L. RATTLE-BOX. 



Calyx 5-cleft, scarcely 2-lipped. Standard large, heart-shaped ; keel scythe- 

 shaped. Sheath of the monadelphous stamens cleft on the upper side ; 5 of 

 the anthers smaller and roundish. Pod inflated, oblong, many-seeded. Herbs 

 with simple leaves. Flowers yellow. (Name from Kpora\oy, a rattle; the 

 loose seeds rattling in the coriaceous inflated pods.) 



1. C. sagittalis, L. Annual, hairy (3 -6' high); leaves oval or oblong- 

 lanceolate, scarcely petioled ; stipules united and decurrent on the stem, so as 

 to be inversely arrow-shaped; peduncles few-flowered; corolla not longer 

 than the calyx ; pod blackish. Sandy soil ; Maine to 111., Minn., Kan., and 

 southward. 



6. GENISTA, L. WOAD- WAXEN. WHIN. 



Calyx 2-lipped. Standard oblong-oval, spreading, keel oblong, straight, 

 deflexed. Stamens monadelphous, the sheath entire; 5 alternate anthers 

 shorter. Pod mostly flat and several-seeded. Shrubby plants, with simple 

 leaves, and yellow flowers. (Name from the Celtic gen, a bush.) 



G. TINCT6RIA, L. (DYER'S GREEN-WEED.) Low, not thorny, with striate- 

 angled erect branches ; leaves lanceolate ; flowers in spiked racemes. Estab- 

 lished on sterile hills, eastern N. Y. and Mass. (Adv. from Eu.) 



7. CYTISUS, Tourn. BROOM. 



Calyx campanulate, with 2 short broad lips. Petals broad, the keel obtuse 

 and slightly incurved. Stamens monadelphous. Pod flat, much longer than 

 the calyx. Seeds several, with a strophiole at the hilum. Shrubs, with stiff 

 green branches, leaves mostly digitately 3-foliolate, and large bright yellow 

 flowers. (The ancient Roman name of a plant, probably a Medicago.) 



C. SCOPARIUS, Link. (SCOTCH BROOM.) Glabrous or nearly so (3-5 

 high) ; leaflets small, obovate, often reduced to a single one ; flowers solitary 

 or in pairs, on slender pedicels, in the axils of the old leaves, forming leafy 

 racemes along the upper branches ; style very long and spirally incurved. 

 Va. and southward. ( Nat. from Eu.) 



