22 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



GRAMINEAE 

 Andropogon glomeratus (Walt.) B. P. S. 



Caledonia Harbor, Mt. Vernon, April 3-4, Elmore L4; coralline and 

 shell in shade on upper beach. 



Distribution : Southeastern United States, West Indies, Panama, and 

 Mexico. 

 Chloris petrea Swartz 



Caledonia Harbor, Mt. Vernon, April 3-4, Elmore L6; shaded on 

 level sand of coralline and shell of upper beach. 



Distribution: Coastal sandy areas of southeastern United States, 

 eastern Mexico, West Indies, and Panama. 

 Chusquea scandens Kunth. ? 



Nature Trail Camp No. 1 on Madden Dam Highway, April 1, 

 Elmore JIO; shaded on moist sandy clay stream bank in open forest. 



Distribution: Central America and West Indies. 



Specimens are sterile and cannot be determined with certainty. 

 Eleusine INDICA (L.) Gaertn. 



Nature Trail Camp No. 1 on Madden Dam Highway, April 1, 

 Elmore Jl. 



Distribution : Common in the warmer regions of both hemispheres. 

 Muhlenbergia Emersleyi Vasey. 



Bahia Honda, March 28, Elmore H33; shaded on protected clay slope 

 in dry hot forest at 50 feet elevation. 



Distribution: Mountainous regions of southwestern United States, 

 south through the mountains of Mexico to Panama. 



In southeastern United States and northern Mexico the habitat of this 

 species is the rocky mountain slopes with well-drained, well-aerated soils 

 in temperate climates. It seldom occurs below 2,000 feet elevation and in 

 northern Mexico is more common at 4,000 feet elevation. Hence, the 

 Panama tropical collection at nearly sea level suggests a plant with differ- 

 ent tolerances for a different habitat. Close study of the Panama popula- 

 tion should reveal differences that could be expressed taxonomically. 

 Panicum milleflorum Hitchc. & Chase 



Caledonia Harbor, Mt, Vernon, April 3-4, Elmore L8. Nature Trail 

 Camp No. 1 on Madden Dam Highway, April 1, Elmore J7; in moist 

 shaded soil of stream bed in open forest. 



Distribution: Central America to Brazil. 

 Paspalum paniculatum L. 



Frijoles, Canal Zone, May 1, Elmore Y4; along railroad. 



Distribution: Widely distributed in tropical America, the type de- 

 scribed from Jamaica. 



