OF ARTS AND SCIENCES. 335 



OxALls CORNICULATA, Liiin. At Lerios (133), Saltillo (134), 

 and Soledad, Coahuila (135) ; San Luis Potosi (7G1 Schaffner, in 

 part). 



OxALis Wkightii, Gray. At San Luis Potosi (761 Schaffner, 

 with the last). Closely resembling 0. comiciduta, hut distinguishable 

 by the thick fusiform root and usually more deeply-cleft leaflets. 



OxALis DICHONDR^FOLIA, Gray. At Guadalupe, Texas (138). 



OxALis DECAPHYLLA, IIBK. In the San Miguelito Mountains 

 (762 Schaffner) ; 102 Parry & Palmer. 



Peganum Mexicanum, Gray. At Parras (150) ; 105 Parry & 

 Palmer. 



Thamnosma Texanum, Torr. At Monclova (141) and Monterey 

 (140) ; 104 Parry & Palmer. 



AsTROPHYLLUM DUMOSUM, Torr. In the mountains east of Sal- 

 tillo (139). The well-developed petals are oblong-lanceolate, 4 lines 

 long, glandular-punctate, and white or yellowish. 



Xanthoxylum Pterota, HBK. At Guajuco, Nuevo Leon (195). 



Xanthoxyluji Clava-Herculis, Linn., var. (X macrophyl- 

 lum, Nutt.) With the leaves all trifoliolate. "West of San Antonio, 

 Texas (2125). 



Ptelea angustifolia, Benth. At Saltillo, in flower (145), and 

 in the mountains east of that jilace, in fruit (146). 



Ptelea trifoliata, Linn., var. mollis, Torr. & Gray. At 

 Georgetown and Bluffton, Texas (147, 148). 



Helietta parvifolia, Benth. in Hook. Icon. PL t. 1385. At 

 Monterey (142) and in the mountains north of Monclova (143, 144). 

 Previously collected at Monterey by Berlandier (144 and 1404), 

 and referred to Ptelea parvifoUa, Gray (Hemsl. Bot. Centr.-Amer. 

 1. 170), which species rests upon Dr. Gregg's specimens only, collected 

 on the Buena Vista battle-field and east of Marin. 



Casijiiroa edulis, Llav. & Lex. At Guajuco (149). 



Castela Nicholsoni, Hook. At Laredo, Texas (152), and at 

 Juraz, Coahuila; 107 Parry & Palmer. 



KcEBERLiNiA SPINOSA, Zucc. At Eagle Pass and Laredo, Texas 

 (151), and at San Luis Potosi (94 Schaffner) ; 106 Parry & Palmer. 



Cedrela ? The lanceolate leaves with a long attenuate acu- 



mination, and the flowers in a close cymose panicle. At Guanajuato 

 (Duges). 



Ilex decidua, Walter. At Georgetown, Texas (153, 154). 

 ScHJEFFERiA cuNEiFOLiA, Gray. At Uvalde, Texas (155), and 

 westward toward Laredo. 



