644 FABACEAE 



Racemes terminal and axillary, never long-peduncled and elongated. 



Stems simple, 1-2 dm. high. 13. D. intermediue. 



Stems simple or branched. 

 Racemes numerous, short, axillary: leaflets with thick, velvety 



pubescent blades, acutish or obtuse. 14. D. erectus. 



Racemes numerous, short, axillary : leaflets with densely velutinous, 



acute blades. 15. D. Drummcmdii. 



Racemes terminal or a few of them axillary, commonly much elongated. 16. D. mollissimus. 



1. Dolicholus minimus (L. ) Medic. Stems numerous, slender, prostrate or climb- 

 ing over bushes, pubescent, especially on the angles, resinous-dotted : stipules subulate, 2 

 mm. long, soon caducous : leaflets 8-40 mm. long, minutely cinereous-pubescent, at least 

 when young, coriaceous, the terminal one with a broad rhombic-orbicular, acutish or ob- 

 tuse, mucronulate blade, the others smaller and obliquely semi-rhombic : racemes axillary, 

 4-10 cm. long, loosely and somewhat distantly flowered, much surpassing the leaves : 

 peduncles 2-4 cm. long : calyx-lobes subulate-setaceous : corolla pale yellow, 6-7 mm. long, 

 much exceeding the calyx ; standard obovate-orbicular, retuse, commonly purple-veined, 

 with a very short claw, resinous-dotted and minutely pubescent on the outer surface : keel- 

 petals bright yellow : pods 1-1.7 cm. long, 4 mm. wide, scythe-shaped, minutely pubes- 

 cent, reflexed : seeds oblong-ovoid, pale brown or grayish, mottled, smooth and shining. 



In pine woods, South Carolina to Florida, Texas and southward to Brazil. May to October. 



2. Dolicholus parvif61ius (DC.) Vail. Stems somewhat woody at the base, slender, 

 climbing on grasses and low bushes, or barely climbing above, pubescent with close grayish 

 down or tomentum : stipules subulate-setaceous, about 1 mm. long : leaflets 3, the blades 

 elliptic or elliptic-lanceolate, those of the basal ones ovate-elliptical or rarely ovate, acutish 

 or obtuse, emarginate, velvety-pubescent or tomentose on both surfaces, strongly reticulated 

 beneath, the terminal one 2-3.5 cm. long, the others inequilateral, 1.5-2.5 cm. long: 

 racemes 2-4 cm. long, usually exceeding the leaves, several-flowered : peduncles 2-3 cm. 

 long, angled : calyx 7 mm. long, pubescent and resinuous-dotted ; lobes acuminate : 

 corolla yellow ; standard retuse, resinous-dotted, minutely retrose-pubescent above the 

 middle : pods 1.3-1.5 cm. long, 4-5 mm. wide, oblong, clothed with a short close-set 

 pubescence and scattered longer rigid yellowish hairs : mature seeds not seen. 



In sandy soil, Florida and the West Indies. September to January. 



3. Dolicholus Texe"nsis (T. & G. ) Vail. Stems somewhat woody at the base, 

 slender, erect or at length much elongated, prostrate and twining over bushes, clothed with 

 fine retrorse grayish pubescence : stipules subulate-setaceous, 1 mm. long, soon deciduous : 

 leaflets 3, the blades 1-2.5 cm. long, oval, rounded or rhombic-ovate, or lanceolate-ovate, 

 obtuse, minutely apiculate, emarginate, minutely rugose and pubescent above, minutely 

 pubescent and often somewhat reticulated beneath, the terminal leaflet largest : flowers 

 solitary or often 2-4 together in the axils of the upper leaves: pedicels 2-3 mm. long: 

 calyx 3 mm. long ; lobes about equal : corolla yellow ; standard with a suborbicular blade, 

 minutely retrorse-pubescent along the apex : pods scythe-shaped, 1-1.5 cm. long, 4-5 

 mm. wide, acutish at the base, with a minute acute termination, pubescent : seeds 2- 

 2.5 mm. broad, suborbicular, lenticular, brown. 



In dry soil, Texas to Arizona and northern Mexico. Also in Brazil and Argentina. May to 

 August. A Texano-Mexican variety with oblong-lanceolate or linear-lanceolate leaflets often t\vice as 

 long as those of the type, is D. Texensis angusttfolius (Engelm.) Vail. 



4. Dolicholus Swartzii Vail. A slender twining perennial or woody vine. Stems 

 apparently branching at the base, pubescent, sparingly resinous-dotted : stipules 4 mm. 

 long, linear-lanceolate, ciliate, reflexed, at length deciduous : terminal leaflet 4-6 cm. 

 long, the blade ovate, long-acuminate, rather thin, soft-pubescent on both surfaces, resin- 

 ous-dotted beneath ; lateral leaflets smaller : racemes 1-2 cm. long or less, 2-3-flowered, 

 the short peduncles very slender : pedicels filiform, 3-4 mm. long, puberulent : calyx 3 

 mm. long, resinous-dotted ; lobes shorter than the tube : corolla yellow, much exceeding 

 the calyx ; standard obovate, 8 mm. long, minutely puberulent and dotted with elevated 

 yellow resinous spots or glands on the outside : pods 2.5-3 cm. long, 5-7 mm. wide, fal- 

 cate, acute at the apex, dark brown and coriaceous, pubescent, resinous-dotted : mature 

 seeds 5-6 mm. long, oblong-ovoid, bright red. 



In sandy soil, southern Florida and Cuba. Throughout the year. 



5. Dolicholus Americ^nus (Mill.) Vail. Stems slender, prostrate, trailing or often 

 twining, 3-5 dm. long or longer, minutely retrorse-pubescent, especially on the angles : 

 stipules reddish, oval or ovate, spreading, pubescent without, glabrous within : leaves 

 distant ; leaflets solitary, the blade grayish green, reniform, 2-4 cm. long, 2-6 cm. broad, 

 obtuse or rarely acutish at the apex, cordate at the base, thick, appressed velvety-pubescent 

 on both surfaces, reticulated and conspicuously veined beneath : flowers short-pedicelled, 

 solitary, or 2-6 in clusters much shorter than the leaves : calyx 8-10 cm. long ; lobes 



