86 BOTANY. 



Psoealea. Perennial herbs, with 3-foliolate leaves and axillary spikes. 

 Stamens monadelphous or somewhat diadelphous. Pod 1-seeded. 



Amoepha. Shrubs, with pinnate leaves and terminal racemes. Wings and 

 keel wanting. Stamens united only at base. Pod 1-2-seeded. 



Petalostemon. Herbs, with pinnate leaves and terminal spikes. Stamens 

 5, monadelphous, bearing 4 of the petals on the tube. Pod 1-seeded. 



Paeeyella. Shrubby, with pinnate leaves and terminal spikes. Stamens 

 10, distinct. Petals none. Pod 1-seeded. 



Dalea. Shrubs or herbs, with pinnate leaves and terminal spikes or heads. 

 Stamens 10, monadelphous, the petals jointed to the tube. Pod 1-2-seeded. 

 1 1 1 Leaves pinnately 3-many-foliolate (digitately 2-4-foliolate in Zornia) ; leaflets 

 entire: pod transversely 2-several-jointed, the joints indehiscent and 1-seeded. 

 Herbs. 



Hedysaeum. Leaflets several, stipellate; stipules scarious. Stamens dia- 

 delphous. Perennial, with axillary racemes. 



Zoenia. Leaflets 2 ; stipules herbaceous. Stamens monadelphous. Flowers 

 spicate, each solitary and sessile between a pair of conspicuous bracts. 

 Annual. 



Desmodium. Leaflets 3 ; stipules dry and striate. Stamens usually mona- 

 delphous. Racemes simple or panicled. 



* * * Anthers uniform. Herbs, climbing by tendrils or twining, sometimes prostrate: 



stamens diadelphous : pod flat,2-valved: racemes axillary (or flowers axillary 

 in Cologania and Bhynclwsia). 



t Leaves abruptly pinnate, terminated by a tendril : seed-stalks broad at the 

 hilum. 



Vicia. Stamen-tube oblique at the mouth. Style filiform, hairy around and 

 below the apex. 



Lathyeus. Stamen-tube nearly truncate. Style dorsally flattened, usually 

 twisted half around, hairy on the inner side, 

 tt Twining or prostrate herbs, with 3-foliolate leaves. 

 % Flowers not yellow : seeds several. 

 Cologania. Calyx tubular. Style naked. Bracts persistent. 

 Galactia. Calyx 4-cleft. Keel nearly straight. Style naked. Bracts minute 

 or caducous. 



Phaseoltjs. Calyx short. Keel strongly incurved and standard reflexed. 

 Style bearded. Bracts minute or caducous. 

 % | Flowers yellow, axillary : seeds 1 or 2. 

 Ehynchosia. Flowers small. Style naked. Leaves often resinous-dotted. 

 Suboedee II. CiESALPINE^5. Flowers more or less irregular, perfect. Perigy- 

 nous disk lining the base of the short calyx-tube. Petals 5, imbricated, the 

 upper one included. Stamens 10 or fewer, distinct. Seeds sometimes 

 albuminous. Radicle not inflexed. 



• Leaves bipinuate ; leaflets small : authers 10, versatile, dehiscing longitudinally : 



calyx slightly imbricate or valvate. 



