LEGUMINOSJE. 105 



Leaves simple, entire, cordate: flowers rose-purple in axillary clusters ^ ... 14 



2. Stamens all united or one above distinct: herbs (except some in 3 & 7). 

 * Leaves palmate with more, than S leaflets: flowers in heads or racemes. 



Leaflets entire. Spikes or racemes terminal: anthers of 2 kinds 3 



Yellow flowers 1 to 5 with a bract . . . Sp. No. 10 in 7 



Purplish flowers: stipules not adnate, deciduous 8 



Leaflets toothed or entire: stipules adnate: anthers alike 1 in 4 



* * Leaves 3-foliolate, palmate or pinnate* 



leaves palmate: flowers in heads or short spikes: corolla persistent 4 



Leaves pinnate: flowers in axillary spikes or racemes. 



Corolla yellow or white: pod wrinkled: leaves fragrant 6 



Corolla purple or greenish: leaflets entire: stipules free 8 



Corolla yellow or purple: leaflets toothed : pod curved or coiled 6 



Leaves pinnate. Flowers in small axillary clusters, yellow: pod spiral, prickly 6 



Flowers solitary or in wheel-like clusters, axillary 7 



* * * Leaves pinnately 4-many-foliolatt vrith a terminal leaflet. 



Flowers solitary or in umbellate whorls, axillary 7 



Flowers in axillary spikes: pod prickly: leaves sticky 10 



Flowers in axillary spikes or heads: pod often inflated, often 2-celled 11 



* Leaves pinnate, ending in a bristle, imperfect leaflet or a tendril. 



Style filiform, hairy around the apex 12 



Style flattened, usually twisted half around, one side hairy 13 



1. THERMOPSIS, Robt. Brown. 



1. T. Calilornica, Watson. Short- woolly: pod 6-8-ovuled, stipe short. 



2. T. montana, Nutt. Rather silky: leaflets smooth above: pod 10-12- seeded 



3. T. mscropliylla, H. & A. Villous: leaves oblong-elliptical acute: seeds 4 or 5. 



2. PICKERINGIA, Nuttall. 

 1. P. montana, Nutt. Leaves 1-3-foliolate, numerous: stamens persistent. 



3. LUPHNTJS, Linnaeus. 



A. Perennials, more or less shrubby, leafy, silky: ovules 6 to 12 1, 2, 3, 4 



B. Perennial herbs, mostly tall; flowers large; bracts deciduous: ovules 6 or more. 



Woody at base: silky: calyx -lips nearly equal 1, 2, 3 



Stems mostly stout and hollow: leaflets glabrous above 5, 6 



Stems slender, not erect: leaflets an inch long or less 7 



Stems leafy and branching: petioles and bracts short 8, 0, 10 



C. Perennial herbs: flowers small: (Ex. No. 13): not yeUow: ovules 3 to 6. 



Leaves distant, not glabrous above; lower petioles long: keel ciliate 11 to 16 



