220 POACE^. 



California (Passadena), Jones 3545; U. S. Dept. Agricul. 269, 

 from Pringle. 



Arizona and California. 



13. S. Scribneri Vasey, Bull. Torr. Club, 11:125 (1884). 



A stout smooth erect grass, 60-90 cm. high. Sheaths longer 

 than the interuodes; ligule less than 1 mm. long, hairy at the 

 throat; blades flat below, involute and slender above, the lower half 

 as long as the culm, 2-3 to the culm. Panicle partially enclosed 

 by the upper narrow sheath, erect, spikelike, 15-20 cm. long; rays 

 in twos and threes. Empty glumes acuminate and 3-nerTed, first 

 12-15 mm. long, second 10-11 mm. long; floret about 7 mm. 

 long from the tip of the short, sharp callus to the joint, thinly 

 clothed with appressed hairs, the upper ones numerous and bearing 

 a crown 2-3 mm. long; awn once or twice bent, 18-20 mm. long; 

 palea about 2 mm. long. 



Xew Mexico, Vaseij; Colorado, Patterson 273. 



14. S. Parishii Yasey, Coult. Bot. Gaz. 7: 33 (1882). 

 Perennial; culms stout, 30-45 cm. high. Sheaths smooth,. 



longer than the internodes ; the margins of the throat jDubescent ; 

 ligule very short; blades involute or convolute, rigid, smooth be- 

 low, scabrous above, the lower ones 12-18 cm. long, the upper 8-10 

 cm. long. Panicle with the base enclosed, contracted or open, 12- 

 15 cm. long, the lower rays in threes, those above in twos or single, 

 the longest about 5 cm. long bearing 5-8 spikelets more or less 

 tinged with purple; empty glumes linear-lanceolate, smooth, 3- 

 nerved, first 12-16 mm. long, second 10-14 mm. long; floral glume 

 about 7 mm. long, including the short stipe, densely clothed with 

 silky hairs often 5 mm. long, 2-toothed, awn 10-20 mm. long. 



California, Parish. 1079, 2487, Shorlleij 283. 



Arizona and California. 



15. S. eminens Cavan. Icon. 5: /. 467,/. 1 : 42 (1799). 



A slender scabrid erect grass, 30-90 cm. high, nodes often pu- 

 bescent. Sheaths shorter than the internodes; ligule very short; 

 blades involute, erect, slender, those from the sterile shoots as long 

 as the culm; leaves of the culm four in number, 15-20 cm. long 

 and 4 mm. wide, tlie terminal one 5-8 cm. wide. Panicle often 



