352 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



nally described. In the United States this is called "yellow foxtail" or 

 " pigeon grass." 



12. Chaetochloa magna (Griseb.) Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 4: 

 39. 1897. 



Setaria magna Griseb. Fl. Brit. W. Ind. 554. 1864. 



A robust annual, 2 meters or more tall, the succulent culms as much as 1 cm. 

 thick, the blades commonly 50 cm. long, 1.5 to 2.5 cm. wide, the thick dense 

 bristly spike 20 to 30 cm. long, tapering to both ends, the second glume 

 nearly equaling the smooth fruit. 



Swamps and wet soil, southeastern United States, West Indies, and Panama. 

 Originally described from Jamaica. 



Bermuda, Jamaica (Black River), Porto Rico (Laguna del Tortuguero), 

 aod Guadeloupe. 



13. Chaetochloa virldis (L.) Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 4: 39. 

 1897. Gbeen foxtail. 



Panicum viride L. Syst. Nat. ed. 10. 2: 870. 1759. 



Setaria viridis Beauv. Ess. Agrost. 51, 178. 1812. 



Annual, branching from the base, commonly not more than 50 cm. tall ; spikes 

 3 to 10 cm. long. 



A weed in waste and cultivated ground. Common in the United States, in- 

 troduced from Europe, whence originally described. Found in Bermuda. Said 

 by Grisebach* to be naturalized in Jamaica. 



Chaetochloa italica (L.) Scribn. {Setaria italica Beauv.), the common 

 millet, is said by Grisebach ^ to be naturalized in Jamaica. In the herbarium 

 of the New York Botanical Garden there is a specimen from Martinique (Duss 

 1315). 



14. Chaetochloa verticillata (L.) Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 

 4: 39. 1897. 



Panicum verticillatum L. Sp. PI. ed. 2. 2: 82. 1762. 



Setaria verticillata Beauv. Ess. Agrost. 51. 1812. 



Culms slender, compressed, geniculate and branching below ; blades thin, 

 lanceolate-linear ; spikes short, green or purplish, the slender bristles retrorsely 

 barbulate. 



A weed in fields and waste places, temperate and warmer regions of both 

 hemispheres, introduced in America. Called in Cuba " pega-pega " and " amor 

 seco." Originally described from southern Europe and the Orient. Found in 

 Bermuda, Cuba (Habana), and Martinique. 



15. Chaetochloa tenacissima (Schrad.). 



Setaria tenacissima Schrad.; Schult. Mant. 2: 279. 1824. 



Panicum tenacissimum Nees, Agrost. Bras. 238. 1829. 



Culms slender but strong, 1 meter or more tall, leaning or clambering, the 

 long narrow blades very scabrous, the spikes 10 to 15 cm. long, with long 

 slender divaricate bristles and small spikelets nearly black at maturity. 



Brushy hillsides, Guatemala to Brazil, whence originally described ; also in 

 Porto Rico (Utuado, Sintenis 6498), and Trinidad (Port of Spain, Hitchcock 

 10002). 



16. Chaetochloa scandens (Schrad.) Scribn. & Merr. U. S. Dept. Agr. Div. 

 Agrost. Bull. 21: 17. 1900. 



Setaria scandens Schrad. ; Schult. Mant. 2: 279. 1824. 



*F1. Brit. W. Ind. 554. 1864. 



