OF ARTS AND SCIENCES. 175 



gle culm-leaf with a very long sheath ; ligule short, fimbriate : panicle 

 contracted, dense, 3 or 4 inches long, the spikelets sessile : lower 

 glumes nearly equal and equalling the flower, thin, scabrous on the 

 keel, the lower acute, the upper obtusish and irregularly toothed, 1^ 

 lines long; flowering glume villous, 2-toothed, bearing a flexuous 

 scabrous rufous awn 6 lines long ; palea glabrous. — At San Luis 

 Potosi (10G7 SchafFner). A strongly marked species, which appears 

 to be undescribed. 



Lycurus phalaroides, HBK. (Z. phleoides, HBK.) Same 

 locality (1045 Schaffner) ; 939 Parry & Palmer. The awns in these 

 specimens vary in length from once to twice that of the glumes. 



Sporobolus Sabeanus, Buckl. At Sutherland Springs, Texas. 

 This rather common Texan grass has been referred to *S'. Coroman- 

 delinus, Kunth, from which it differs notably in its thin unequal 

 glumes and linear leaves. It is nearer to S. argutus, Kunth. 



Sporobolus atrovirens, Kunth. At San Luis Potosi (1034 

 Schaffner). 



Sporobolus repens, Presl. Same locality (1025 Schaffner) ; 

 926 Parry & Palmer. So named at Kew, but differing from 3285 

 Bourgeau, which was referred by Munro to this species, in the longer 

 and more acuminate lower glumes, which are more than half the 

 length of the flower. 



Sporobolus crtptandrus. Gray. Near Ladrillera, San Luis 

 Potosi (Schaffner, without number). 



Sporobolus ? Near S. Wrightii, Munro. At San Luis 



Potosi (1078 Schaffner). 



Epicampes ? Stout, erect (2 to 4 feet high), very pubescent 



throughout, with a narrow close lead-colored panicle: lower glumes 

 villous, equal, very thin and nerveless, not carinate, usually toothed 

 at the blunt apex ; flowering glume similar and ecjual, a line long, 

 with a slender dorsal awn at the summit ; palea villous. — At San 

 Luis Potosi (1023 Schaffner) ; 933 Parry & Palmer. A very pecu- 

 liar species. 683 and 1153 Bourgeau {'' E. robusta, Fourn.") are the 

 same, but glabrous (excepting the flowering glume) or only minutely 

 pubescent. 



Epicampes ? A slender stoloniferous perennial, 1 to IJ feet 



high, the purplish spikelets approximate upon the short erect branches 

 of the short panicle : lower glumes acuminate, slightly scabrous on 

 the keel ; flowering glume shortly villous (1^ lines long), acuminate, 

 with a short awn between the very short terminal teeth. — In the 

 mountains near San Miguelito (1024 Schaffner). 



