LEGUMINOS.B. 93 



24. CROTALARIA. Linn. Rattle-box. 



Gr. crotalon, a rattle; the seeds becoming loose in the ripe pods. 



Calyx 5-cleft, somewhat 2-lipped. Standard large, cor- 

 date. Keel falcate, acuminate. Filaments all united 

 with the sheath often cleft above. Leg B me inflated, oblong, 

 many-seeded. — Herbs or shrubs, with often simple leaves, and 

 raccmcd yellow flowers. 



C. SAGITALIS, L. Arrow-leaved Rattle-box. 



Hairy ; stem erect, branched ; leaves simple, oblong-lanceolate, scarcely petioled ; 

 stipules united and decurrent on the stem, inversely arrow-shaped; pedunchs few- 

 flowered ; corolla as long as the calyx. 



Sandy soils. July, August. Ann. Stryn 4 to 10 inches higb, with spreading 

 branches. Leaves alternate, hairy on both sides, rounded at the base. Flowers 

 yellow. Seeds few, rattling in the turgid pods. 



25. LUPINUS. Tourn. Lupine. 



Lat. lupus, a wolf, because these plants were thought to devour the fertility of the 



soil. 



Calyx deeply 2-lipped. Sides of the standard reflexed : 

 keel scythe-shaped, pointed. Sheath of the monadelphous 

 stamens entire ; anthers alternately oblong and globose. 

 Legumes coriaceous, oblong, flattened, often torulose. — 

 Herbs with palmately 5 — \b-foliate leaves and showy flowers 

 in terminal racemes or spikes. 



1. L. perennis. L. Wild Lupine. 



Somewhat hairy ; stem erect ; leaflets 7 — 11, narrowly obovate-oblong, mueronate ; 

 fiowers alternate, in a long and loose terminal raceme; mlyx without appendage ~ f 

 ripper lip emarginate, lower entire ; legume linear-oblong, very hairy. 



Sandy woods and hills; common. May. June. Per. A beautiful plant, som ~ 

 times cultivated in gardens. Stem, a foot high, soft, smoothish. Leaves soft, 

 downy, on long stalks. Flowers purplish blue, varying to white. It is often 

 called Sun-dial, from the circumstance of its leaves turning to face the sun from 

 morning till night. 



Several handsome species are sometimes cultivated in gardens, among which is 

 L. polyphyllus, from Oregon, a splendid plant 3 — 5 feet high, with racemes of whit* 

 purple or yellow flowers more than a foot long. L. Nde&katensis, from Nootka 

 Sound, a handsome species 2 — 3 feet high, flowerspurple. L. arboreus, a magnifi- 

 eent exotic shrub, 6 feet high, with large yellow flowers. 



Tribe 5. SOPHORE^. The Sophora Tribe. 



Stamens distinct : Corolla truly papilionaceous. 



26. BAPTISIA. Vent. False Indigo. 



Gr. bapto, to dye ; in allusion to the coloring properties of some of the 6pecies. 



Calyx 4 to 5-toothed bilabiate. Petals 5, nearly equal. 

 Standard with the sides reflexed. Wings oblong. Keel 

 slightly incurved- Stamens deciduous. Legume stalked 



