336 PROCEEDINGS OF THE AMERICAN ACADEMY 



Pachystima Mtrsinites, Raf. In the Sierra Madre, forty miles 

 south of Saltillo ; a few specimens apparently of this species, though 

 without flowers or fruit. 



Llavea integrifolia, Hemsl. At Guajuco, Nuevo Leon (182), 

 and in the mountains north of Mouclova, Coahuila (183). 



MoRTONiA SCABRELLA, Gray. At Parras, Coahuila (2111). 



MoRTONiA Greggii, Gray. A variety with narrow leaves and 

 glabrous or nearly so (^M. Falmeri, HemsL). In the Sierra Madre 

 south of Saltillo (323) ; also in the mountains east of Saltillo, very 

 sparingly. 558 Gregg is the same, though more pubescent. 3f. effusa, 

 Turcz., founded on 2119 Berlandier, must also be M. Greggii. 



ZizYPnus OBTUsiFOLius, Gray. A variety with small coriaceous 

 glaucous leaves, from ovate to narrowly oblong, occasionally toothed, 

 and the inflorescence very pubescent. At Eagle Pass, Texas (168), 

 and at San Lorenzo de Laguna, Coahuila (166). 



ZizYPHDS LYCioiDES, Gray. At Lerios, Coahuila (167). 



CoNDALiA SPATHULATA, Gray. At Eagle Pass, on the Rio 

 Grande (160, 164), and at Saltillo (162); 111, and 112 in part, 

 Parry & Palmer. 



CoNDALiA OBOVATA, Hook. At San Antonio (161) and Uvalde, 

 Texas (163). 



CoNDALiA Mexicana, Schlecht. In the Morales Mountains (93 

 SchafFner) and in San Luis Potosi Valley (1060 SchafFner) ; 112, in 

 part, and 113 Parry & Palmer. 



MicRORHAMNUs ERicoiDEs, Gray. At Lerios (165). 



Karwinskia Humboldtiana, Zucc. At Laredo, on the Rio 

 Grande (173), and on Corpus Christi Bay. 



Rhamnds Caroliniana, Walter. Kendall County, Texas (172). 



Adolphia infesta, Meisn. At Guanajuato (Duges). This is 

 probably the Colletia (?) multijlora of De Candolle. 



CoLUBRiNA GLOMERATA, Hcmsl. (Barcetia Guanajuatensis, 

 Duges, Rev. Cient. Mex. 1. 8, t.) At Guanajuato (Duges). 



CoLUBRiNA Greggii. An erect shrub, the branches pubescent : 

 leaves oblong-ovate to lanceolate, acute or acuminate, subcordate at 

 base, finely and acutely serrate, more or less rufous-tomentose beneath, 

 less pubescent above, 2 or 3 inches long : peduncles axillary, bearing 

 1 to 3 pedicellate globose (drupaceous) capsules, 3 or 4 Imes in 

 diameter : seeds dark brown, shining, with an obscure protuberance 

 on the back. — At Soledad, Coahuila (171), and at Monterey, Nuevo 

 Leon (154 Gregg). The fruit much resembles that of C. Texensis ; 

 the carpels separating to the base through the calyx and dehiscent to 



