92 FABACEAE. 



1. D. minimus (L.) Medic. Stems minutely pubescent: leaflets "> 4 mi. long; 

 blades of the lateral ones semi-rhombic, that of the terminal one rhombic- 

 orbicular: lower calyx-lobe subulate: standard 5-6 mm. long; blade orbicular- 

 cuneate: auricles of the wings acute. Pinelands. F. K. (Bah., Cuba, Ant.) 



2. D. parviflorus (DC.) Vail. Stems grayish-tomentose: leaflets 1.5-3.5 cm. 

 long; blades elliptic to elliptic-lanceolate or sometimes broader: lower calyx- 

 lobe linear-lanceolate: standard 7-8 mm. long; blade suborbicular : auricles of 

 the wings obtuse. Pinelands. F. K. (Cuba.) 



3. D. Michauxii Vail. Stems densely gray-pubescent: leaflets 2.5-5 mm. 

 long; blades broader than long, soft-hirsute beneath: calyx 12-17 mm. long; 

 lobes abruptly acuminate: standard 12-14 mm. long; blade cuneate: pod 

 slightly longer than wide. Pinelands. 



4. D. cinercus (Nash) Vail. Stems cinereous-pubescent: leaflets 1-3 cm. long; 

 blades obliquely orbicular to ovate-orbicular or depressed: lateral calyx-lobes 

 lanceolate, markedly shorter than the lower one; lobes of the upper calyx-lip 

 lanceolate: standard 6-7 mm. long: pods 14-17 mm. long. Pinelands. F. K. 



5. D. simplicifolius (Walt.) Vail. Stems hirsute: leaflets 2-5 cm. long; blades 

 depressed-orbicular or reniform, hirsute on the veins beneath: calyx 8-10 mm. 

 long; upper lobes typically ovate, lower lobe about equalling the lateral ones: 

 standard 6-7.5 mm. long; blade broadly obovate or suborbicular: wings about 

 as long as the standard. Pinelands. 



6. D. intermedius (T. & O.) Vail. Stems tomentose: leaflets 2-5 cm. long; 

 blades suborbicular and often somewhat rhombic, or ovate-orbicular, or those 

 of the lateral ones ovate or oval: calyx about as large as that of D. simplici- 

 folius; upper lobes typically lanceolate: standard 7-8 mm. long; blade nearly 

 oblong or oblong-obovate : wings much shorter than the standard. Pinelands. 



17. OAJAK Adans. Partially woody herbs. Leaflets 3. Racemes few- 

 several-flowered. Calyx somewhat 2-lipped, the upper lobes partially united. 

 Corolla yellow or mainly so: blade of the standard suborbicular, sharp-auricled 

 at the base: blades of the wings rather prominently, but unequally auricled on 

 each side: blades of the keel-petals broad at the apex. Pod turgid, elongate. 

 1. O. Cajan (L.) Mfflsp. Plants 3-30 dm. tall, velvety-tomentose : leaflets 

 mainly 4-12 cm. long; blades narrowly elliptic or oblong, acute or short- 

 acuminate, pale and prominently veined beneath: calyx 8-14 mm. long: 

 standard-blade 16-20 mm. long: pods narrowly oblong to linear-oblong. 

 Pinelands and cultivated grounds. Nat. of the Old World Tropics. F. K. 

 (Bah., Cuba, Ant.) CONGO-PEA. PIGEON-PEA. 



18. EEYTHBINA L. Herbs, shrubs, or trees. Leaflets 3. Racemes 

 several-many-flowered. Calyx obliquely truncate. Corolla red, scarlet, or 

 crimson: standard conspicuous, erect, narrowed upward: wings and keel- 

 petals very small, nearly equal in sice, the blades short-clawed. Androecium 

 exserted: filaments united to about the middle or slightly above it Pod 

 torulose. 



1. E. arborea (Chapm.) Small. Shrub, or tree 3-8 m. tall: blades of the leaf- 

 lets deltoid to hastate: racemes few-flowered: calyx cylindric: standard 35-40 

 mm. long; blade about 1 cm. wide; wing-petals 11-12 mm. long: pods 9-13 

 cm. long: seeds scarlet. Hammocks. F. K. COBAL-BEAN. 



19. MUCUNA Adans. Vines. Leaflets 3. Racemes or panicles erect, 

 usually few-flowered. Calyx 2-lipped: upper lip entire: loner lip 3-lobed. 



