152 PANICACE^- 



New Jersey (ballast), Scribner 3613 + for U. S. Dept. 

 Agricul. 117; Iowa, Hitchcock; Mexico, Vasey for U. S. Depto 

 Agrieul. 



The plants have much the habit of C. viridis. A weed in 

 cultivated grounds of warm countries. 



2. C. magna (Griseb.). Setaria magna Griseb. Fl. Brit. W. 

 Ind. 554 (1864). 



Culm compressed, robust, 3-6 meters high, pubescent below 

 the nodes, having much the habit of 6^. Italica. liigule oblicjuo, 

 ciliate; blades flat, scabrous. Spikes cyliudrical-clavate, 4-5 (an. 

 diam., rays crowded or the lowest somewhat remote, bristles 1-3 to 

 the spikelot. roughened upwards, 10-15 mm. long. Spikelets ellip- 

 tical, about 2 mm. long, first glume 3-uer\ed, half the length of 

 the floret, all others nearly equal in length, second 7-nerved. third 

 6-nerved, with a palea; fertile floret smooth. 



Florida, (/. F. Nash 1279 in 1894; also found in Cuba and 

 Jamaica swamps. 



3. C. latiglumis (Vasey). S. latiglumis Vasey, Bull. Torr. 

 Club. 229 (1886). 



Cnlms erect, simple or sparingly branched, slender, 25-45 cm. 

 high, nodes finely ])ubescent. Sheaths compressed, narrow, 

 sparsely scabrous-pubescent, shorter tliaii tin; iiiteniodes; ligulo a 

 ciliate ring; blade scarcely smooth, 10-15 cm. long, 4-6 cm wide. 

 Spike erect, loosely flowered, 5-10 cm. long. 0-S mm. diam.. rays 

 short, 1-6-flowered, usually with 1 l)ristle to each spikelet, the 

 bristles 15-20 mm. long. Spikelets broadly ovoid, obtuse, 4 mm. 

 long, glumes thin, first ginme sul)reniform, concave, 7-9-13- 

 norved, 3 mm. long, second cordate, shaped like the first one, 

 15-23-28-nerved, third tumid at the base, truncate. 11-13-nerved, 

 witli a thin .ihort palea; fertile floret ovate, abruptly acute or 

 mucronatc, 3 mm. I'^ng. 



Nearly allied to C. pauciseta, and perhaps one is a mere variety 

 of the other. 



Mexico, Palmer in 1885. 



4. C. pauciseta (Vasey) Kuntze. T?ev. Gen. PI. 769 (1891). 

 Schn'a pt'uciseta Vasey, Bull. Tor. Club, 13:230 (1886). 



