130 LEGUMINO^E. LUPINUB. 



r LEX . 



'2 PLATYCARPOS Watson Proc. Am. Acad. viii, 5SS. Flowers 

 in terminal racemes. Sides of the upper petal strongly redexed. 

 Ovary 2-ovulecL Cotyledons broad and clasping after germina- 

 tion, usually long-persistent. Annuals with euneate-oblong or 

 obovate leaflets and persistent bracts ; pods ovate. 



I*, luteolus Kell. Proc. Cal. Acad. v, 38. Stout, 12 feet high, usual- 

 ly much branched: pubescence short, appressed, rather silky: stipules 

 setaceous, villous: leaflets usually 7, euneate-oblong, an inch long or 

 more, the petioles but little longer: racemes short, dense; peduncles ex- 

 ceeding the leaves; bracts linear-setaceous, villous; flowers yellow, 6 

 lines long; upper lip of the calyx narrow, about a line long, lower lip 4 

 lines long, upper petal oblong, shorter than the others: pods villous: 

 seeds 2 lines long, black, rough. Southern Oregon to California. 



L. microcarpus Sims Bot. Mag. t, 2413. Erect and branching, 318 

 inches high, vinous with long spreading hairs: stipules long-setaceous: 

 leaves mostly approximate upon the stem, on elongated petioles; leaf- 

 lets 711, usually 0. euneate-oblong, 12 inches long, obtuse and mu- 

 cronulate or emarginate, smooth above: flowers in close verticils, on 

 pedicels 12 lines long; bracts subulate-setaceous, equalling the calyx 

 or shorter; calyx dense villous, lower lip large 3-toothed, the middle 

 tooth small; upper lip very short, sub-scarious, 2-toothed; petals 

 purple to white or cream-color, 6 7 lines long, the keel slightly ciliate: 

 pods vilious, 8 lines long. On moist slopes, from the Columbia river to 

 southern California. 



L. pusillus Pursh Fl. 468. Rather stout, 310 inches high, diffusely 

 branched from the base, hirsute with long spreading hairs; leaflets 

 usually 5, euneate-oblong or oblanceolate, 5 15 lines long, acute or 

 obtuse, nearly glabrous above, about half as long as the petioles: 

 racemes short-peduncled or sessile, not exceeding the leaves, 23 inches 

 long: pedicels 23 lines long; upper lip of the calyx 2-cleft, the lower 

 subeutire; petals purple or rose-color, 4 lines long, equal: seeds nearly 

 2 lines broad. On sanuy plains, eastern "Washington to the Missouri 

 river :md New Mexico. 



Li. Lrevicaulis Watson Bot. King 53, t, 7. Stems short or nearly 

 wanting: leaves 1 4 inches high, pubescent W 7 ith spreading hairs; 

 leaflets mostly 7, cuiieate-obovate, 57 lines long, rounded at the apex: 

 racemes dense. 12 inches long, the peduncles nearly equalling the 

 leaves: upper lip of tlie calyx very short or truncate, scarious, the low- 

 er one subentire: petals blue, 3 5 lines long, equal. Southeastern Ore- 

 gon to Nevada, Arizona and New Mexico. 



3 LL.EX L. Gen. n. 881. ( FURZE.) 



Compact thorny shrubs with simple prickle-pointed lea I- like 

 organs without stipules, and scattered yellow dowers. Calyx of 

 two nearly or quite distinct yellowish sepals. Petals short, un- 

 guiculate, subequal the upper one not rerlexed. Stamens 10, 

 monadelphous ; anthers in two sets, the outer ones slu,rt and 

 versatile, the inner long and hasifixeu. Ovary sessile, many- 

 ovuled ; style smooth, incurved ; stigma capitate. 



II. Europaeus L. Sp. 741. A dense shrub 36 feet high, the numerous 

 short branches villous, ending in a short spine: lower leaves some- 

 times lanceolate, more commonly reduced to spines. 6 lines long: flow- 

 ers 6 lines long, yellow, solitary in the axil of a spinescent leaf, often 

 crowded on the short branchlets: calyx villous: upper petal ovate, 

 obtuse, hardly erect: pods few-seeded, but little longer than the calyx. 



