FESTl'CE^. 4ur> 



A smooth erect tufted nither stout <,'niss, 50-80 cm. liigli. 

 Sheaths compressed; ligule a ciliate rinj;; bhides of the culm 3-4, 

 iuvohite, some of tlicm 00-TO cm. long, 4-5 mm. wi(U'. Panicle 

 exserted, spikelike, more or less interrupted below, I'^-'^Ocm. long, 

 1-1.5 cm. diam, Spikelets often tinged with light ])ink or purple, 

 ovate or oval, 5-7-flowered, 4-5 mm. long: empty glumes lanceo- 

 late, 1-nerved, subequal, 3-4 mm. long; floral glume ciliate on the 

 nerves, lance-oval, lateral nerves without a margin, '^.7 mm. long, 

 awn 0.3-0.5 mm. long; i)alea ovate-lanceolate, slightly revoluto. 



Texas, Dnniimond, livvvrvhon. 



Texas to Arizona. 



4, S. eragrostoides (\'asey & Scribn.) L. U. Dewey, Coult. 

 Contrib. U. S. Nat. Herb. 2:539(1804). Tnodia eraf/iusfuules 

 Vasey & Scribn. Contrib. T. S. Nat. Herb. 1:58 (18!»0). 



A slender erect light-colored, nearly smooth grass, 80-120 cm. 

 high; no les smooth, culm solid, comi)ressed. Sheaths compressed, 

 longer than the intcrnodes; ligule obtuse, l-'l mm. long, blades 10, 

 long-pointed, scabrous, involute, '.'0-30 cm. long, 4 mm. wide, often 

 breaking at the base. Panicle scarcely exserted, slender, simple, 

 open. 30 cm. long, rays single, distant, the lower ones at length 

 drooping, the longest 15 cm. long, bearing a few slender brandies, 

 which are flower-])earing for four-fifths of their length. Spikelets 

 slightly tinged with purple, ovate-lanceolate, 5-8-(lowered. 5-0 mm. 

 long; empty glumes ovate-lanceolate. 1-nerved, second 2.5-3 mm. 

 long; floral glume oval or ovate, obtuse. 2-2..') mm. long, nerves 

 short-hairy below; palea linear, about the length of its glume. 



Ikiicved to be of value for cultivation. 



Texas, Reverchm, yotfUei/; New Mexico, Wright 420, 478, 

 2054: Mexico (Nuevo Leon), Pringle 1072. 



Florida, Texas, ^lexico. 



^'ar. scabra Vasey ined. Plant scabrous throughout; lower 

 blades broailer. 



Texas, XealJeij for Nat. Mus. 



5. S. ambigua (Ell.) Kuntzc IJev. fJon. PI. 2:789 (1891). 

 Poa amhigua Ell. liot. S. C. & (ia. 1:105 (1810). Windsorin 

 ambigua ^wii. Gen. 70 (1818). Triciisjjis atiibigua Chuimi. Fl. S. 

 States 559 (1800). 



