Pennell: Plants of southern United States 355 



10. Chamaecrista puberula Greene 



Chamaecrista puberula Greene, Pittonia 5: 134. 1903. "On 

 Galveston Island [Texas], 23 Sept. 1901 [S. M. Tracy]." 

 Co-type of Tracy, 7797, seen in the herbarium of the New York 

 Botanical Garden. 



Annual. Stem erect, 4-8 dm. tall, puberulent with ascending- 

 incurved hairs. Stipules lanceolate-acuminate, nerved, puberu- 

 lent, finely ciliate, 4-5 mm. long. Petioles 3-6 mm. long, puberu- 

 lent with incurved hairs. Petiolar gland single, short-pediceled 

 to sessile, discoid to slightly saucer-shaped, 0.5-1 mm. wide, dark- 

 brown. Leaflets ten to fifteen pairs, 10-18 mm. long, 2-4 mm. 

 wide, linear-lanceolate, acutish to acute-mucronate, densely puber- 

 ulent, not ciliate, midrib evident, elsewhere obscurely nerved. 

 Bracteoles 1-2 mm. long, lanceolate-ovate. Pedicels one to three 

 in a fascicle, 5-20 mm. long, puberulent with incurved hairs. 

 Sepals 6-8 mm. long (in the bud shorter than the petals), ovate- 

 lanceolate, acute to short-acuminate, pubescent. Petals 10-15 

 mm. long, anterior slightly exceeding laterals. Stamens 10, 

 unequal, 2 longer; anthers 4-5 mm. long, deep purple. Legumes 

 5-6 cm. long, 4-5 mm. wide, appressed-puberulent. Seeds eight 

 to fourteen, 3.7-4 mm. long. 



Moist to dry sandy soil, southern Texas. 



Texas. Colorado: Sheridan, F. W. Pennell 5538 > September 

 21 (P, Y). Dewitt: Cuero, A. H. Howell 252 > July 7 (U). 

 Galveston: Galveston, F. W. Pennell 5574 > September 23 

 (P, Y), Lavaca: Hallettsville, G. L. Fisher J2d ^ August (U). 

 Nueces: Kings Ranch, V. Bailey 251 > May 10 (U). Robert- 

 son: Hearne, F. W. Pennell 5418 > September ii (P, Y). Webb: 

 Laredo, A. Schoft no > June (Y). Wharton: Pierce, S. M. 

 Tracy 7796 > September 16 (U, Y), anther-sacs yellowish or 

 reddish. 



II. Chamaecrista leptadenia (Greenman) Cockerell 



Cassia leptadenia Greenman, Proc. Amer. Acad. 41: 238. 1905. 

 "48 km. east of El Paso, May to October, 1849, Chas. Wright, 

 no. 154 (hb. Gray)." Co-type seen in the LTnited States 

 National Herbarium. 



Chamaecrista leptadenia Cockerell, Muhlenbergia 4: 68. 1908. 



Annual. Stem erect, slender, 1-5 dm. tall, sparingly branched, 

 puberulent in lines with incurved to spreading hairs. Stipules 



