WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 335 
5. Cassia bauhinioides A. Gray, Bost. Journ. Nat. Hist. 6: 180. 1850. 
Type Loca.ity: On the Rio Grande, Texas. 
RanaeE: Western Texas to Arizona. 
New Mexico: Kingston; Mangas Springs; Dog Spring; mesa west of Organ Moun- 
tains; west of Roswell. Mesas, in the Lower Sonoran Zone. 
6. Cassia covesii A. Gray, Proc. Amer. Acad. 7: 399. 1868. 
TYPE LocALITy: ‘‘Camp Grant, and south of Prescott, Arizona.”? 
RanGE: Southwestern New Mexico to Arizona and southward. 
New Mexico: Telegraph Mountains (Wooton). Dry soil. 
4. CHAMAECRISTA Moench. PARTRIDGE PEA. 
Herbaceous annuals or perennials with abruptly pinnate leaves and bright yellow 
flowers in few-flowered extra-axillary clusters; rachis of the leaf bearing one or two 
glands near the base; calyx lobes 5, acuminate; petals 5, unequal, the lowest little or 
much the largest; stamens 10, all perfect, the anthers opening by terminal pores; 
pods narrowly oblong-linear, flattened, the valves elastic; seeds compressed, ovoid or 
quadrate. 
KEY TO THE SPECIES. 
Perennial; peduncles 30 to 40 mm. long............------- sees eee ee 1. C. wrightit. 
Annuals; peduncles 20 mm. long or less. 
Flowers smal], the petals about 5 mm. long, one much longer 
than the other four..............-.--- 22-2 ee eee eee ee eee 2. C. leptadenra, 
Flowers larger, the petals 12 mm. long or more, all of about the 
same size. 
Leaflets 16 to 28; pod not beaked or obscurely 80.......... 3. C. fasciculata. 
Leaflets 10 or 12; pod with a beak 2 or 3 mm. long......... 4. C. rostrata. 
1. Chamaecrista wrightii (A. Gray) Woot. & Standl. 
Cassia wrightit A. Gray, Pl. Wright. 2: 50. 1853. 
Tyre Locauity: ‘Hillsides, on the Sonoita, near Deserted Rancho, Sonora.’ 
Rance: New Mexico, Arizona, and Sonora. 
New Mexico: On the Mimbres ( Mexican Boundary Survey 297). 
2. Chamaecrista leptadenia (Greenm.) Cockerell, Muhlenbergia 4: 68. 1908. 
Cassia leptadenia Greenm. Proc. Amer. Acad. 41: 238. 1905. 
TYPE LOCALITY: Texas. 
Rance: Western Texas to Arizona, 
New Mexico: Organ Mountains. Dry hillsides, in the Upper Sonoran Zone. 
3. Chamaecrista fasciculata (Michx.) Greene; Small, Fl. Southeast. U.S. 587. 1903. 
Cassia fasciculata Michx. Fl. Bor. Amer. 1: 262. 1803. 
Tyre Locaity: ‘‘Hab. in Pennsylvania et Virginia.’’ 
RanGE: Maine to South Dakota, Florida, Colorado, and New Mexico. 
New Mexico: Organ Mountains (Wooton). Dry fields and hillsides, in the Upper 
Sonoran Zone. 
4, Chamaecrista rostrata Woot. & Stand]. Contr. U. 8. Nat. Herb. 16: 135. 1913. 
Tyrr Locatity: Sandy soil at Logan, New Mexico. Type collected by G. L. Fisher 
(no. 93). 
Rance: Known only from type locality, on sandy plains of the Upper Sonoran 
Zone, 
