342 PENNELL: PLANTS OF SOUTHERN UNITED STATES 
than twice exceeding others. Legumes 6- <o 
7-seeded, hirsute with spreading hairs. Stem, 
at least above, hirsute with spreading hairs. 
Leaflets 15-27 pairs. Stout, erect, mostly 
hirsute throughout. 13. C. aspera. 
Leaflets 9-18 pairs. Slender, diffuse, mostly 
hirsute only above. 13a. C. aspera B. 
1. Chamaecrista Wrightii (A. Gray) Pennell, comb. nov. 
Cassia (Chamaecrista) Wrightii A. Gray, Pl. Wright. 2:50. Mr 
1850. 
“ Hill-sides, on the Sonoita,ynear Deserted Rancho, Sonora; 
Sept. [C. Wright] (1034). Co-types seen in the herbarium of 
Columbia University at the New York Botanical Garden and in 
the herbarium of the Academy of Natural Sciences of Philadelphia. 
Perennial. Stem ascending, 3-4 dm. tall, finely puberulent in 
lines with incurved to appressed hairs. Stipules lanceolate- 
acuminate, very shortly or not ciliate, 3-4 mm. long. Petioles 3-4 
mm. long, slightly puberulent. Petiolar gland single, below 
proximal leaflets, conspicuously stalked, discoid, 0.15-0.2_ mm. 
wide, dark-brown. Leaflets six to eight pairs, 8-10 mm. long, 2 
mm. wide, obliquely ellipsoid-lanceolate, rounded, very shortly 
mucronulate, glabrous, not ciliate, obscurely nerved. Pedicel 
one, 30-40 mm. long, sparingly puberulent in lines with incurved 
hairs. Sepals 7 mm. long, ovate, acute. Petals 10-12 mm. long, 
the anterior slightly exceeding the laterals. Stamens ten, unequal, 
two longer; anthers 6-8 mm. long, gradually narrowed above, 
yellow (?). Legumes 4 cm. long, 5 mm. wide, sparingly finely 
appressed-puberulent. Seeds eight. 
“ Hill-sides,”” northeastern Sonora and southern Arizona. 
ARIZONA. Without definite locality, J. T. Rothrock, 1874; 
4750 ft. alt. (U). 
2. Chamaecrista aristellata Pennell, sp. nov. 
Cassta aristellata A. Gray, manuscript name on sheet here taken as 
type. 
Perennial. Stem ascending, 4 dm. tall, puberulent with in- 
curved hairs and hirsute with interspersed longer spreading hairs. 
Stipules lanceolate-acuminate, long-ciliate, 5 mm. long. Petioles 
3-5 mm. long, hirsute. Petiolar gland single, slightly below 
proximal leaflets, conspicuously slender-stalked, discoid, 1-1-5 
mm. wide. Leaflets six to eight pairs, 10-15 mm. long, 2 mm. 
