PULSE FAMILY. 119 



rounded, spreading; keel strongly Incurved, blunt, on long, united claws. Style in- 

 curved, bearded down one side. Pod raised out of the calyx on a stalk of its own, 

 thin and bladdery-inflated, flattish on the seed-bearing side, several-seeded. 

 -==-= Woody climbers. 



27. WISTAEIA. High climber, with numerous leaflets, and large, showy, bluish flowers, 



in hanging, terminal, dense racemes. Calyx with 2 short teeth on the upper, 

 and longer ones on the lower, side. Standard large, roundish, turned back ; keel 

 merely incurved, blunt. Pod knobby, several-seeded. 



M- ++ Pod jointed or constricted between the seeds (joint rarely reduced to 1) ; leaflets 

 3 or more; herbs (or No. 31 woody at base\, not twining or trailing. 



= Leaflets 3 (or rarely but 1 in No. 30). 

 o Flowers yellow. 



28. STYLOSANTHES. Flowers in heads or short spikes, leafy-bracted. Calyx with a 



slender stalk-like tube, and 4 lobes in the upper lip, one for the lower. Stamens 

 monadelphous ; 5 longer anthers fixed by their base, 5 alternate ones by their 

 middle. Pud flat, reticulated, sometimes raised on a stalk-like, empty, lower joint. 

 Stipules united with the petiole. 



o o Floivers purple to white. 



29. LESPEDEZA. Stipules small and fre.e, or falling early. Flowers in spikes, clusters, 



or panicled, or scattered. Stamens diadelphous ; anthers uniform. Pod flat and 

 thin, ovate or orbicular, reticulated, sometimes raised on a stalk-like, empty, lower 

 joint. 



30. DESMODIUM. Leaflet rarely only 1, stipellate. Pod of very flat joints (Lessons, 



p. 122, Fig. 394), usually roughish and adhesive by minute-hooked pubescence. 

 Herbs, with small flowers, in racemes, which are often panicled. 



81. ERYTHRINA. Shrubby, or from a woody base. Stem, branches, and even the leaf- 

 stalks usually prickly. Flowers large and showy, usually red, in racemes. Wings, 

 and sometimes keel small and inconspicuous. Calyx without teeth. Standard 

 elongated ; wings often wanting or so small as to be concealed in the calyx ; keel 

 much shorter than the standard, sometimes very small. Pod stalked in the calyx, 

 linear, knobby, usually opening only down the seed-bearing suture. Seeds scarlet. 



32. GLYCINE. Leaflets large, thin, and bean-like. Stipules very small and free, usually 



persistent. Flowers small and hairy, in short, axillary racemes, the calyx toothed. 

 Pod flat and bean-like, short, in ours hanging, very hairy. Seed mostly short or 

 globular, and somewhat pea-like. Strong, erect, hairy herbs. 

 = = Leaflets more than 3. 

 o Leaflets 4. 



33. ARACHIS. Annual. Flowers small, yellow, in axillary heads or spikes. Calyx with 



one narrow lobe making a lower lip, the upper lip broad and 4-toothed, and a long, 

 thread-shaped or stalk-like tube. Keel incurved and pointed. Stamens monadel- 

 phous, 5 anthers longer and fixed by or near their base, the alternate ones short and 

 fixed by their middle. Ovary at the bottom of the very long and stalk-like tube of 

 the calyx, containing 2 or 3 ovules ; when the long style and the calyx with the rest 

 of the flower falls away, the foi-ming pod is protruded on a rigid, deflexed stalk which 

 then appears, and is pushed into the soil, where it ripens into the oblong, reticulated, 

 thick, coriaceous fruit, which contains the 1-3 large and edible seeds; the embryo 

 composed of a pair of very thick and fleshy cotyledons and an extremely short, nearly 

 straight, radicle. 



o o Leaflets 5 or more, often many. (No. 20 may be sought here.) 



84. ^ESCHYNOMENE. Leaflets several, odd-pinnate, small. Pod of very flat joints. 



Herbs, with small yellow flowers (sometimes purplish externally), few or several on 

 axillary peduncles. 



85. CORONILLA. Leaflets several, odd-pinnate, small. Pod of thickish, oblong or linear 



joints. Herbs or shrubs, with flowers in head-like umbels raised on slender, axillary 

 peduncles. 



