PANICEiE. 110 



3: 502 (1804). P. zoncdc diss. Fl. Sic. Prod. 1 : 82 (1825). ''A 

 form witli })urpk' zoiuite leaves," Grisb. Cultivated. 



22. P. Schiedeanum Trin. ex Steud. Nom. Ed. 2, 2:20:5 (1841). 

 P. Pringlei Vasey, ined. 



Apparently perennial ; diffusely hraucliing near the base, aljout 

 20 cm. high. Sheatlis smooth; ligule a ciliate ring; blades flat, 

 scabrous above, lanceolate, 2-3 cm. long. Panicle about 4 cm. 

 long, consisting of 3-5 secund spikes 1-2 cm. long, with a scabrous, 

 triquetrous or flattened Avavy axis. Spikelets crowded, single, 4.5 

 mm. long, ovate-lanceolate, each very short pedicel bearing a bristle 

 4-6 cm. long: first glume broad-oval, thin. 3-nerved, 1.5 mm. long, 

 second ovate, subacute. 11-nerved, 4 mm. long; floral glume of the 

 lower staminate floret but very little longer, 5-nerved, upper floret 

 pistillate, narrowly ovate, scabrid, mucronate, 2.7 mm. long. 



Mexico (Jalisco), Pringh 2423. 



23. P. Crus-galli L. Sp. PI. 5G (1753). Barnyard-grass. 

 Oplismenns Cnis-ijalli Dum. Obs. Gram. Belg. 138 (1823). 

 EcliinocJdoa Crus-gaJU Beauv. Agrost. 53 (1812). 



A coarse erect or decumbent annual, branching below% 30-120 

 cm. high. Leaf-blades lanceolate, 10-20 or more cm. long, 5-15 

 mm. wide, margins rough, otherwise usually smooth ; ligule obso- 

 lete. Spikes dense, alternate, simple or compound, 2-8 cm. long, 

 forming dense, secund panicles 10-20 cm. long. Spikelets crowded, 

 2-3 together, subsessile in alternate rows along two sides of a rough, 

 triquetrous rachis, flat on one side, ovoid, acute, stout, hairy, 3-4 

 mm. long; first glume broad, triangular, half as long as the spike- 

 let, mucronate, 3-nerved, second concave, broad-oval, acute, 7- 

 nerved, third shorter, 5-nerved, fourth hyaline, 2-nerved; floral 

 glume and palea smooth, acute or ol^tuse. 



Very variable in size ; color green or jjurple. Widely distributed 

 in w^arm and tropical countries. It makes a very good forage-plant 

 when grown on rich, moist soil. 



Michigan, FartoeU for M. A. C. ; Montana, Anderson; Mexico, 

 Palmer 430, 430a; New Jersey, Brinton for U. S. Dept. Agricul. 

 58; New Mexico, Jo?? f 5 4125; Iowa., Hitchcock; Washington. Lake. 



Var. hispidum (Muhl.) Torr. Fl. N. Y. 2:424 (1843). P. 



