174 PROCEEDINGS OP THE AMERICAN ACADEMY 



Andropogon Virginicus, Linn. At San Luis Potosi (1049 

 Schaffuer) . 



Andropogon Myosurus, Presl (?) At San Luis Potosi (1050 

 Schaffuer). 



Andropogon hirtiflorus, Kunth. Same locality (1050 Schaff- 

 ner) ; 966 Parry & Palmer, and the same as 752 Bourgeau. 



Andropogon leucopogon, Nees. Same locality (1056 Schaffner). 



Aristida PURPUREA, Nutt., var. Berlandieri, Trin. & Rupr. 

 At Guadalupe, Texas (1350). 



Aristida bromoides, HBK. At Parras (1352, a large form), and 

 in the mountains west of Saltillo (1351, an erect form) ; also at San 

 Luis Potosi (1066 Schaffuer). 



Aristida divaricata, Humb. & Bonpl. At San Luis Potosi 

 (1057 Schaffner). 



Stipa viridula, Trin. At Lerios, Coahuila (1249). Dr. Palmer 

 notes that this grass is considered poisonous to animals, having a tem- 

 porary narcotic effect upon them. 



Stipa Jurava, Beauv. {S. eriostachya, HBK., Nov. Gen. 1. 127, 

 t. 41.) At San Luis Potosi (1054 Schaffner). 



Stipa avenacea, Linn., var. (?) At San Luis Potosi (1055 

 Schaffner) ; 929 Parry & Palmer, and 669 Bourgeau. It was also 

 collected in New Mexico by Wright (1998), and in Arizona by 

 Roth rock (456). 



Muhlenbergia calamagrostidea, Kunth. At Parras, Coahuila 

 (1348) ; the same as 218 Bourgeau, so named by Fournier. Also at 

 San Luis Potosi, an undeveloped form (1068 Schaffner). 



Muhlenbergia Clomena, Trin. At San Luis Potosi (1069 

 Schaffner). 



Muhlenbergia Schaffneri, Fourn. Same locality (1065 

 Schaffnei'). 



Muhlenbergia Berlandieri, Trin. (?) Allied to M. debilis, 

 but a stout erect grass, with a long narrow panicle, the glumes about 

 a fourth as long as the flower. At San Luis Potosi (1059 Schaffner) ; 

 the same as 1992 Wright. 



Muhlenbergia ? From Mexico, but the locality uncertain ; 



scanty specimens. The same as 1557 Bourgeau and 679 Botteri, the 

 latter named by Munro M. capillaris, from which they differ in the 

 slender decumbent geniculate stems and very short and obtuse glumes. 



Muhlenbergia scabra. Cespitose, erect, a foot high or less, 

 very scabrous throughout and somewhat rigid : leaves mostly basal, 

 erect, flat, i to 1^ lines broad, equalling the culm or shorter, the sin- 



