356 Pennell: Plants of southern United States 



linear-attenuate, glabrous or nearly so, conspicuously ciliate, 

 nerved, 5-7 mm. long. Petioles 2-5 mm. long, puberulent with 

 incurved hairs. Petiolar gland single, stalked, discoid, 0.2-0.3 

 mm. wide, nearly black, stalk brown. Leaflets twelve to sixteen 

 pairs, 8-12 mm. long, 1-2 mm. wide, oblong-linear, acutish, 

 mucronate-tipped, glabrous, strongly ciliate, obscurely nerved. 

 Bracteoles 1-1.7 mm. long, lanceolate. Pedicels one or two in a 

 fascicle, 3-5 mm. long, appressed-puberulent. Sepals 4-5 mm. 

 long, lanceolate, acuminate, hirsute. Petals 3-6 mm. long, 

 anterior twice exceeding laterals. Stamens unequal; anthers 2 

 mm. long, yellow (?). Legumes 3-4.2 cm. long, 3-4 mm. wide, 

 appressed-puberulent. Seeds ten to eighteen, 3 mm. long, very 

 thin, light-brown. 



Dry soil, western Texas to southeastern Arizona. 



Texas. El Paso: C. Wright 154 (U). Presidio: Chenates re- 

 gion, G. C. Nealley S41 (U). 



New Mexico. Dona Ana: Organ Mountains, E. 0. Wooton 

 435 < September i (Y). Luna: Floridas, A. I. Mulford 1038a 



> August 2 (Y). 



Arizona. Cochise : Bowie ; Chiricahua Mts., /. C. Blumer 2086 



> August 30 (U); Fort Huachuca; Tucson. Pima: Santa Rita 

 Mountains, D. Griffiths & J. J. Thornber 212 (U, Y). 



12. Chamaecrista nictitans (L.) Moench 



Cassia nictitans L. Sp. PI. 380. 1753. "Habitat in Virginia." 

 Typified by L. Hort. Cliff. 497. pi. 36, 1737, where an excellent 

 description and figure are given. 



Cassia procumbens L. I.e. 380. 1853. "Habitat in Indiis." 

 Based wholly upon "Cassia americana procumbens, herbacea, 

 mimosae foliis, floribus parvis, siliquis angustis, planis," A. J. 

 A[mmann], Conm. Petrop. 12: 238-242 (cited erroneously 

 by Linnaeus as "Comm. petrop. t. 11"). This is fully de- 

 scribed and is unquestionably Chamaecrista nictitans (L.) 

 Moench. The type-locality is stated "circa Philadelphiam 

 urbem in Pensylvania, Americae septentrionalis provincia, 

 sitam." There appears to have been no specimen in the 

 Linnean herbarium in 1753, and the species is not checked by 

 Linnaeus until his third list in 1767. The West Indian plant 

 known until rec( ntly by this name has been described by Dr. 



