FABACEAE 645 



narrowly elliptic, acuminate, veined, pubescent and ciliate, reflexed in fruit : corolla yel- 

 low ; standard minutely pubescent on the outer surface, with a suborbicular blade 6-8 

 mm. in diameter : pods 1-1.5 cm. long, 6-7 cm. wide, sessile, obliquely oblong, acute, 

 pubescent : seeds 2, oblong, truncate at the base, black. 

 In dry soil, Texas and Mexico. May to June. 



6. Dolicholus Michauxii Vail. Stems prostrate, 6-9 dm. long, or more, twining 

 above, clothed, especially on the angles, with a short matted grayish pubescence : stipules 

 2-5 mm. long, ovate-lanceolate, spreading, persistent : leaflets 2.5-5 cm. long, the blades 

 much dilated, broader than long, obtuse, sometimes obscurely mucronulate, rugose and 

 minutely hirsute above, sparingly resinous-dotted, reticulated and softly hirsute beneath ; 

 upper leaves rarely 3-foliolate with obtuse obliquely suborbicular lateral leaflets : racemes 

 1-several-flowered, peduncled : calyx 1-1.5 cm. long, pubescent, resinous-dotted ; lobes ob- 

 long-lanceolate or elliptic, acuminate, conspicuously foliaceous : corolla pale yellow ; stand- 

 ard minutely pubescent : pods about 1.4 cm. long, 6 mm. wide, obliquely acute : seed 2-5 

 mm. in diameter, red-brown. 



In dry pine lands, Florida. March to September. 



7. Dolicholus cin&reus (Nash) Vail. Stems numerous, prostrate and trailing, 

 branched, 6-10 dm. long, appressed cinereous-pubescent : stipules turning brown, ovate, 

 acuminate, ciliate, 3-4 mm. long : leaves 3-6 cm. long : leaflets 3, the blades appressed- 

 pubescent above and somewhat rugose on the veins and sparingly resinous-dotted beneath, 

 the lateral leaflets obliquely ovate or orbicular-ovate, 1-2.3 cm. long, 9-18 mm. wide; 

 terminal leaflet larger, orbicular-ovate to depressed-orbicular, 1.5-2.6 cm. long, 1.3-3 cm. 

 wide : flowers 2-several together in short axillary clusters not exceeding the petioles : ped- 

 icels slender, 1-3 mm. long : calyx-lobes lanceolate, acuminate, 3-nerved, usually reflexed 

 in fruit, the middle lobe 1-1.3 cm. long, somewhat exceeding the lateral ones : corolla yel- 

 low ; standard minutely pubescent along the summit : pods oblong, obliquely acute at the 

 apex, 1.6 cm. long, 8 mm. wide, appressed-pubescent : seeds lenticular, 5 mm. in diam- 

 eter, mottled, brown. 



In high pine lands, peninsular Florida and Pelican Key. June to July. 



8. Dolicholus tomentosus (L.) Vail. Stems rather stout, softly retrorse-hirsute, es- 

 pecially on the prominent angles, twining above, 3-6 dm. long or more : stipules ovate or 

 ovate-lanceolate, reddish brown, 5-7 mm. long : leaves rather distant, 4-12 cm. long, 

 (basal ones often 1-foliolate): leaflets mainly 3, the blades ovate or ovate-rhombic, (basal 

 ones often dilated and depressed-orbicular), 3-6 cm. long, obtuse, clothed with soft pubes- 

 cence ; terminal leaflet the largest, the others obliquely ovate : racemes few-flowered, short - 

 peduncled, much shorter than the petioles : flowers 9-14 mm. long : calyx-lobes acuminate, 

 3-nerved, the 3 lower approximately equal : corolla yellow ; standard retuse, obscurely 

 hirsute near the apex : pods 1.5 cm. long, 8 mm. wide, obliquely oblong, each with a very 

 short, acute or slightly oblique apex : seeds lenticular, 2.5-3 mm. in diameter, dark brown. 



In dry soil, Virginia to Florida, Mississippi and probably Texas. A less densely pubescent form, 

 with relatively narrow and thinner, undulate'leaflets, is D. tomentosus unduldtus Vail! 



9. Dolicholus Torreyi Vail. Stems slender, branched, prostrate, spreading, or 

 probably twining above, minutely pubescent : stipules 4-6 mm. long, lanceolate, slender, 

 caducous: leaves 3-foliolate: leaflets 2.5-3.5 cm. long, the blades orbicular-ovate or 

 oblong-ovate, obtuse or with a short abrupt acumination, narrowed at the base, minutely 

 and sparingly pubescent on both surfaces or nearly glabrous, beset with scattered resinous 

 dots beneath ; terminal leaflet largest : racemes 5-8 cm. long, the scattered flowers 

 about 1 cm. long : calyx 8 mm. long, pubescent, resinous-dotted ; lobes linear or linear- 

 lanceolate : corolla yellow ; standard nearly orbicular, 8 mm. long, pubescent on the outer 

 surface, with a small, internal crescent-shaped callosity above the claw : pods not seen. 



On sand hills, Texas. Spring to fall. 



10. Dolicholus Lewtonii Vail. Soft-pubescent and minutely resinous-dotted through- 

 out. Stems prostrate, 3-5 dm. long or longer, obscurely retrorsely hirsute-pubescent, appar- 

 ently not twining at the summit : stipules obliquely lanceolate, 6-8 mm. long : terminal 

 leaflet 4-6 cm. long, 4-8 cm. wide, the blade dilated or pbovate-orbicular, commonly 

 broadest above the middle, broadly rounded and sometimes slightly retuse at the apex, nar- 

 rowly subcordate at the base ; lateral leaflets with obliquely obovate-oblong reticulated 

 blades : upper racemes sessile, 2-4 cm. long, the others on peduncles 2-4 cm. long calyx 9- 

 10 mm. long ; lobes foliaceous, exceeding the glabrous yellow corolla : pods not seen. 



In dry sandy soil, Orange County, Florida. March to October. 



11. Dolicholus latifolius (Nutt. ) Vail. Stems stout, 6 dm. long, clothed with a close 

 soft pubescence, twining above : stipules lanceolate, 3-5 mm. long, soon deciduous : leaves 

 5-15 cm. long : leaflets 3-8 cm. long, the blades ovate or ovate-rhombic, often somewhat 



