234 XLVII. LEGUMLNOS^E. CROTALARIA 



ginate, about equaling the petiole, more or less pubescent beneath ; roc. axillary, 

 subumbellate, lower ones with apetalous flowers ; As. in pairs ; leg. ovate, smooth- 

 ish, much longer than the calyx. Dry woods, Can. and U. S. Root creeping 

 and woody. Stems clustered, slender, 8 14' long. Apetalous flowers few, the 

 complete ones seldom producing fruit. Leaflets 6 12" by 4 8". Petioles 

 9 18" long. Corollas small, violet, pedicellate. Legume rhomboidal. Jl. Aug. 

 /?. divergent. (L. divergens. PA.) Ped. filiform, divergent, much longer than 

 the leaves, mostly unfruitful ; leg. reticulate. Leaflets ovate. 



6. L. SESSILIFLORA. Michx. (L. violacea, /?. T. fy G.} 



St. erect, branching, puberulent; Ifts. small, oblong-oval, obtuse, mucio- 

 nate, longer than the petioles ; fls. glomerate, on peduncles much shorter than 

 the leaves, those at the base apetalous and fertile ; lower segment of the calyx in 

 the complete flowers much longer than the others ; leg. orbicular-ovate, reticu- 

 lated, smooth, much longer than the calyx. Woods, Can. ! to Flor., Ohio ! and 

 La. Stem rigid, slender, 1 2f high, with numerous, crowded, small leaves. 

 Leaflets rigid, 36 or 8" by 1 2". Flowers numerous, mostly apetalous. 

 Legume about 2" diam. Aug. Sept. 



7. L. RETICULATA. Pers. (Li. violacea, y. T. fy Cr.) 



St. erect, rigid, simple, glabrous; petioles nearly erect; Ifts. sublinear, 

 strigose-pubescent beneath, strongly reticulated and mucronate ; fls. fasciculate 

 on short, axillary peduncles ; segments of the calyx of nearly equal length ; kg. 

 strongly reticulated, acute. N. J. ! to 111. ! and La. Stem 2f or more high, slen- 

 der, rarely branched. Leaflets 10 18" by 1 3", a little broadest in the mid- 

 dle, acute at each end, upper ones smaller. Flowers all complete in some speci- 

 mens, all apetalous in others. Corolla violet. Legume 1J" diam. Aug. 



8. L. STUVEI. Nutt. 



Erect, branched, tomontose-pubescent ; Ifts. oval or roundish, longer than 

 the petiole ; roc. axillary, many-flowered, equaling or exceeding the leaves in 

 length; apetalous fls. few; leg. hairy, ovate, acuminate, longer than the subulate 

 calyx teeth. Dry soils, N. Y. to La. A variable plant, 2 3f high. Leaves 

 always hairy beneath, generally so above. Corollas purple, much longer than 

 the calyx. Aug. Sept. 



29. GENISTA. 

 Celtic gen, Fr. genet ; a small shrub. 



Calyx with the upper lip 2-parted and the lower 3-toothed ; vexil- 

 lum oblong ; keel oblong, scarcely including the stamens and style ; 

 stigma involute ; stamens monadelphous. Shrubby plants with sim- 

 ple leaves and yellow flowers. 



G. TINCTORIA. Dyer's Broom. Wood-waxen. 



Branches round, striate, unarmed, erect; Ivs. lanceolate, smooth; kg. 

 smooth. 7J. A naturalized species, found occasionally in dry, hilly grounds. 

 Stems or branches numerous, ascending or erect, If high, from long, woody, creep- 

 ing roots. Leaves sessile, alternate. Flowers bright yellow, axillary, sessile, 

 or nearly so, solitary. The whole plant dyes yellow, and with woad, green. Aug. 

 30. CRO TALARI A. 



Gr. KporaXov, a rattle ; from the rattling of the loose seeds in the pods. 



Calyx 5-cleft, somewhat bilabiate ; vexillum cordate, large ; keel acu- 

 minate ; sta. 10, monadelphous ; filamentous sheath cleft on the upper 

 side ; legume pedicellate, turgid. Herbs or shrubs. Lvs. often simple. 



C. SAGITTALIS. Rattle-box. 



Plant erect, branching, hairy ; Ivs. simple, lanceolate ; slip, opposite, 

 acuminate, decurrent; roc. 3-flowered, opposite to the leaves; cor. shorter than 

 the calyx. (1) Plant about a foot high, with a hairy aspect, and inflated pods, 

 in woods and sandy fields, N. H. to Ark. Stem herbaceous, rigid. Leaves al- 

 leviate, entire, nearly sessile, rounded' at the base. The plant is best distin- 

 guished by its opposite, united, decurrent stipules, so situated that each pair ap- 

 pears inversely sagittate. Sepals long, hairy. Corolla small, yellow. Seeds 

 tew, rattling in the turgid pod. Jl. 



