268 PAPILIONACEAE. [Vor<. II. 



i. Crotalaria sagittalis I,. Rattle-box. (Fig. 2055.) 



Crotalaria sagittalis L. Sp. PI. 714. 1753. 



Annual, or perennial (?), erect or decum- 

 bent, villous-pubescent, branching, rarely 

 over i high. Leaves simple, oval, lanceo- 

 late or oblong, acute or obtusish at the apex, 

 rounded at the base, entire, nearly sessile, i'- 

 1%' long, 2 // -8 // wide; stipules persistent 

 and united, decurrent on the stem, sagittate 

 above, or the lower wanting; peduncles \'- 

 4' long, 2-4-flowered; pedicels 1"-$" long; 

 flowers yellow, 4 // -6 // long, the corolla about 

 equalling the calyx; pod oblong, glabrous, 

 nearly sessile in the calyx, i' long, 4 // -5 // in 

 thickness, much inflated, nearly black at 

 maturity; seeds shining. 



In dry, open places, northern New England 

 to Florida, west to Minnesota, Arkansas and 

 Mexico. June -Sept 



2. Crotalaria rotundifdlia (Walt.) Poir. Prostrate Rattle-box. (Fig. 2056.) 



Anonymos rotundifolia Walt. Fl. Car. 181. 1788. 



Crotalaria sagittalis\nr, ovalis Michx. Fl. Bor. 

 Am. a: 55. 1803. 



Crolalaria rotundifolia Poir. in Lam. Encycl. 

 Suppl. a: 402. 1811. 



Crotalaria ovalis Pursh, Fl. Am. Sept. 469. 1814. 



Perennial by a deep somewhat woody root, 

 the slender branches usually prostrate. Pu- 

 bescence mostly dense, brownish, appresscd ; 

 leaves broadly oblong or oval, obtuse at both 

 ends, or narrowed at the base, paler beneath 

 than above, ^'-i^' long; petioles i // -2 // 

 long; upper stipules usually distinctly sagit- 

 tate, the lower much smaller, or often want- 

 ing; peduncles lateral, 2 / -6 / long, slender, 2- 

 6-flowered; flowers usually distant, yellow, 

 6"-8 // long; corolla little longer than the 

 calyx; pod nearly as in the preceding species. 



Mostly in dry soil, southern Virginia to Flor- 

 ida and Mississippi. May-Aug. 



6. LUPINUS L, Sp. PI. 721. 1753. 



Herbs, rarely scrubs, with alternate digitately-compound 7-i5-foliolate (rarely simple or 

 3-5-foliolate) leaves, and showy flowers in terminal spikes or racemes. Calyx deeply toothed 

 and 2-lipped. Standard orbicular or ovate, its margins reflexed; wings oblong or obovate; keel 

 incurved, sometimes beaked. Stamens monadelphous, their sheath not cleft; anthers of two 

 forms as in Crotalaria. Ovary sessile; style incurved. Pod flattened, generally constricted 

 between the seeds, the valves coriaceous. [Latin name of some pulse, from lupus, wolf.] 



Over loo species, mainly natives of temperate and warm regions. 

 America, mainly on the western side of the continent. 



Perennial; flowers 7" -9" long; leaflets oblanceolate. 



Corolla blue, pink or white, the standard not spotted. 



Corolla blue, with a conspicuous dark spot on the standard. 

 Perennial; flowers 4" -6" long; leaflets oblong-linear. 

 Annual; leaflets mainly oblong; pod 2-seeded. 



About 70 occur in North 



1. L. perennis, 



2. L. Plattensis. 



3. L. argenteus. 



4. L. pusillus. 



