VOL. II. ] 



PEA FAMILY 



2. Rhynchosia latifolia Nutt. Prairie 

 Rhynchosia. (Fig. 2231.) 



Rhynchosia latifolia Nutt.; T. & G. Fl. N. A. i: 

 285. 1838. 



Softly pubescent, stem angled, trailing or 

 climbing, sometimes 5 long, with a few long 

 branches. Stipules lanceolate, small, or wanting; 

 petioles i'-$ f long; leaflets 3, broadly ovate, or 

 somewhat rhomboid, or the end one orbicular, 

 I'-if long, mostly obtuse; racemes elongated, 

 exceeding the leaves, sometimes i long in 

 fruit, many-flowered; pedicels i // -2 // long; 

 calyx about 6" long, very deeply parted, the 

 segments narrowly lanceolate, acuminate; cor- 

 olla little longer than the calyx; pod oblong, 

 acute, very pubescent, about \ f long. 



"' In dry soil, Missouri to Louisiana and Texas. 

 May-June. 



3. Rhynchosia erecta (Walt.) DC. 

 Erect Rhynchosia. (Fig. 2232.) 



Trifolium erectum Walt. Fl. Car. 184. 1788. 

 Rhynchosia erecla DC. Prodr. 2: 384. 1825. 

 Rhynchosia tomentosa var. erecta T. & G. Fl. N. 

 A. 1 : 285. 1838. 



Erect, rather stout, simple or slightly 

 branched, velvety-pubescent or tomentose, 

 i-2}4 high. Stipules linear-lanceolate, 

 acuminate, 2 // ~3 // long; petioles shorter than 

 or equalling the leaves; leaflets 3, oval, ovate 

 or slightly obovate, thick, densely tomentose, 

 especially beneath, obtuse or acute, i'-2' 

 long; racemes 5-15-flowered, sessile or short- 

 peduncled; flowers $"-$" long; pod oblong, 

 pubescent, 6 // -8 // long, about $" wide. 



In dry soil, Delaware to Florida, west to 

 Louisiana. May-Sept. 



4. Rhynchosia simplicifdlia (Walt.) Wood. 

 Round-leaved Rhynchosia. (Fig. 2233.) 



Trifolium simf>licifolium Walt. Fl. Car. 184. 1788. 

 Rhynchosia reniformis DC. Prodr. 2: 384. 1825. 

 Rhynchosia tomentosa var. monophylla T. & G. Fl. N. 



A. i: 284. 1838. 

 Rhynchosia simplicifolia Wood, Bot. & Fl. 96. 1870. 



Erect, low, simple, pubescent with spreading 

 hairs, $'-<)' high. Stipules lanceolate, acuminate, 

 3 // -4 // long; petioles shorter than or exceeding the 

 leaves; leaflet usually solitary, orbicular or broader, 

 thick, obtuse and rounded at the apex, slightly 

 cordate at the base, i / -2 / long (leaflets rarely 3, the 

 lateral ones ovate); racemes rather densely flowered, 

 peduncled; flowers $"-*>" long; pod as in the pre- 

 ceding species. 



In dry soil, Virginia to Florida, west to Louisiana. 

 May-July. 



