74 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



DISTRIBUTION. 



In loose sands of the coast from Staten Island, New York, to Florida and 

 Louisiana ; on the Atlantic coast of Costa Rica, in the West Indies, and on 

 the coast of Brazil. 



New York : Staten Island, Kearney in 1894. 

 New Jersey: Camden, Smith 64. Atlantic City, Scribner in 1895. Wildwood, 



Chase 3506. Cape May, Parker in 1871 ; Martindale in 1877. 

 Delaware: Rehoboth, Commons 144 in 1895. Cedar Neck, Commons 143 in 



1875. 

 Maryland: Chesapeake Beach, Hitchcock in 1905; Pennell 2541 and in 1909. 



Millstone, Hitchcock 7871. Mount Vernon, Tidestrom 7464. Annapolis, 



Bartlett 1862. 

 Virginia: Colonial Beach, Hu b bard 398. Franklin, H eller 1170. Cape Charles, 



Canby & Rose 837. Cape Henry, Amcr. Or. Nat. Herb. 621 ; Kearney 1813, 



1814. Virginia Beach, Hitchcock in 1902; Williams 3108. Fortress Monroe, 



McCarthy in 1884. Portsmouth, Noyes 24. Dismal Swamp, Chase 3665. 

 North Carolina : Newbern, Kearney 1948. Greenville, Chase 4573 ; Hitchcock 



in 1905. Wilmington, Kearney 286. Eastern North Carolina, McCarthy 



in 1885. 

 South Carolina : Isle of Palms, Chase 4531 ; Hitchcock in 1905. 

 Georgia : Tybee Island, Hitchcock in 1902. 



Florida: Miami, Westgate in 1904. Elliotts Key, Pollard & Collins 213. Sol- 

 dier Key, Small, Carter & Small 3300. Sanibel Island, Tracy 7172. St. 



Vincent Island, McAtee 1800. 

 Alabama : Mobile, Mohr in 1878. Navy Cove, Mohr in 1888. Point Clear, Mohr 



in 1879 and in 1885. 

 Mississippi : Horn Island, Tracy in 1897. Deer Island, Tracy 140. Ship Island, 



Pollard 1088. Ocean Springs, Pollard 1022. Biloxi, Tracy 4526. 

 Louisiana: Grande Isle, Langlois in 1879. 

 Costa Rica: Boca Banana, Tonduz 9121. 

 Bermuda : Collins 143. Paget, Brown & Britton 128. Middleton Bay, Moore 



3073. 

 Bahamas : Andros, Small & Carter 8972. Water Key, Wilson 8151. Anguilla 



Isles, Wilson 7936. 

 Cuba : Playa de Marianao, Le6n 5634. Punta Arenas, Shafer 700. Cayo Pare- 



d6n Grande, Shafer 2737. 

 Jamaica: Grand Cayman, Millspaugh 1249. Cayman Brae, Millspaugh 1162. 

 Porto Rico: Arecibo, Chase 6561. Aguadilla, Chase 6604. Cabo Rojo, Sintenis 



29 b. Mona Island, Hess 440. Cayo Muertos, Britton, Coicell & Brotvn 5046. 



Vieques, Chase 6696. 

 Brazil : Rio Janeiro, Jard. Bot. Rio Janeiro 132. 



13. Cenchrus palmeri Vasey. 



Cenchrus palmeri Vasey in T. S. Brandeg. Proc. Calif. Acad. II. 2: 211. 1889. 

 *• Collected by Dr. E. Palmer at Guaymas, Mex., in 1887." The type specimen, 

 Palmer's no. 689, in the National Herbarium, is a single branching tuft, the 

 culms 30 to 42 cm. tail, the burs 1 or 2 to each spike, their spines blackish 

 purple. 



DESCRIPTION. 



Plants annual, leafy ; culms rather slender, compressed, scabrous below the 

 nodes, pubescent at the summit, at first erect, soon branching and spreading, 

 12 to 42 cm. tall ; sheaths mostly overlapping, loose, retrorsely velvety-pubescent, 



