62 FABACEAE. 



Keel spirally twisted. 18. PHASEOLUS. 



Keel incurved. 



Inflorescence capitate. 19. VIGNA. 



Inflorescence racemose or paniculate. 



Upper calyx-lip shorter than the lower : keel 



angled : style pubescent. 20. DOLICHOS. 



Upper calyx-lip longer than the lower : keel 



curved : style glabrous. 21. CAXAVALI. 



TBIBB IX. VICIEAE. 

 Plants with tendrils on the leaves : style with a tuft of 



hairs at the apex. 22. VICIA. 



1. SOPHORA L. Shrubs, trees, or herbs. Leaf-blades several-foliolate. 

 Eacemes erect. Calyx nearly equally 5-lobed or truncate. Standard markedly 

 clawed. Wings and keel-petals auricled on one side. Pod thick. Seeds thick. 



1. S. tomentosa L. Shrub, with copiously pubescent foliage: blades of the 

 leaflets oblong, oblong-ovate, or oval, or rarely spatulate, 2.5-6 cm. long, 

 finely pubescent beneath: calyx 5-8 mm. long, the limb undulate: corolla yel- 

 low, 18-25 mm. long: blades of the wings and the keel-petal narrowly oblong: 

 pods 5-11 em. long, torulose. Coastal sand-dunes and hammocks, U. S. keys, 

 U. keys, L. keys. [E. K.] (Ber., Bah., Cuba, Ant.) 



2. CBOTALABJA [Dill.] L. Herbs. Stipules often decurrent on the 

 stem or branches. Leaf -blades 3-foliolate or 1-foliolate. Calyx with a promi- 

 nently 2-lobed upper lip and a deeply 3-lobed lower lip. Corolla yellow or 

 blue: standard with a pair of callosities near the base of the blade: wings 

 with the scarcely auricled blades broadened upward: blades of the keel-petals 

 broadly scythe-shaped. Pods globular to cylindric. BATTLE-BOX. 



Leaves with 1-foliolate blades. 



Standard with a blade much less than 2 cm. wide : blades of the upper leaflets of 



a linear-oblong or lanceolate type : stipules more or less decurrent. 

 Leaflets with orbicular or oval blades predominating : stems decumbent or 



prostrate. 1. C. maritima. 



Leaflets with linear blades predominating : stems erect or 



nearly so. 2. C. Purshii. 



Standard with a blade nearly or quite 2 cm. wide : blades of 

 the upper leaflets of a spatulate or oblanceolate type : 

 stipules not decurrent. 3. C. sericea. 



Leaves with 3-foliolate blades. 



Plants annual : lobes of the lower calyx-Hp longer than the 



tube : pods 2.5-3.5 cm. long. 4. C. incana. 



Plants perennial : lobes of the lower calyx-lip shorter than 



the tube: pods 1-1.5 cm. long. 5. C. pvmila. 



1. C. maritima Chapm. Stems radiating from a stout root: blades of the 

 lower leaflets suborbicular to oval; of the upper ones narrower: calyx appressed- 

 pubescent: standard 9-12 mm. long. Pinelands, L. keys. [E. K.] 



2. C. Purshii DC. Plants 1-5 dm. tall, the branches sometimes decumbent: 

 blades of the lower leaflets spatulate to oblanceolate; of the upper ones linear, 

 often very narrowly so: calyx becoming 11-14 mm. long: standard 8-10 mm. 

 long; keel 7-8 mm. long: ovary glabrous. Pinelands, L. keys. [E. K.] 



3. C. sericea Retz. Plants stout, the stem erect, finely pubescent: blades of 

 the leaflets often bristle-tipped: stipules broad: calyx 16-18 mm. long; lower 

 lip longer than the tube; lobes lanceolate: corolla yellow; petals pubescent 

 near the base, the standard with a suborbicular blade about 2 cm. in diameter: 

 pods slightly broadened upward, 3-5 cm. long. [C. spectabilis Roth.] Culti- 

 vated grounds and roadsides, Key West. Nat. of the E. Indies. (Ant.) 



4. C. incana L. Plants erect: blades of the leaflets oval to obovate: calyx 

 becoming 10-12 mm. long: keel 14-16 mm. long: ovary pubescent. Pinelands 

 cultivated grounds, and waste places, U. S. keys. [E. K.] (Bah., Cuba, Ant.) 



