86 



CONTRIBUTIONS FEOM THE NATIONAL HEEBAEIUM. 



about one-fifth as long as the spikelet, broad, loose and truncate, obscurely nerved; 

 second glume and sterile lemma equal, 5 to 7-nerved; fruit 1.8 to 1.9 mm. long, 

 about 1 mm. wide, obovate-elliptic. 





-r 



V 



Fig. 76.— Distribution of P. repens. 



DISTRIBUTION. 



Sea beaches, extensively creeping and acting as a sandbinder, along the Gulf Coast, 

 Alabama to Louisiana, native to trop- 

 ical and subtropical coasts of both 

 hemispheres. 



.Alabama: Mobile, Curtiss 6513, 

 , ■ ' > i ■ ■■^Kearney 17, Mohr in 1876, 1877, 



. and 1882. 



Mississippi: Biloxi, Chase 4377, 

 Kearney 342, Pollard 1152; 

 Horn Island, Tracy 3861; 

 Ocean Springs, Tracy 38; Deer 

 Island, Tracy in 1898. 

 Louisiana: Cameron, Cocks 2186, 

 Baton Rouge (in rice fields 

 along the Mississippi River), Fulton in 1907; Plaquemines County, Langlois 

 in 1882; Pointe a la Hache, Langlois in 1884. 

 Nicaragua: i^Zmi in 1868. 

 Cuba: Habana, -Leon 296, 563. 

 Brazil: Itajahy, Ule 567. 



V 43. Panicum goiiini Fourn. 



Panicum gouini Fourn. Mex. PL 2 : 28. 1886. This name was earlier listed without 

 description by Hemsley.a Fournier cites "Vera Cruz (Gouin n. 4, Julio)." The 

 type specimen is in the Paris Herbarium. 



Panicum gouini pumilum Fourn. Mex. PL 2 : 28. 1886. This name was earlier listed 

 without description by Hemsley.o Fournier cites two specimens as follows: "Vera 

 Cruz (Virl[et] n. 1300); Antigua in pratis humidis (Liebm[ann] n. 450)." The first 

 could not be found; the second, in the Copenhagen Herbarium, is labeled "Panicum 

 Gouini Fourn." in Fournier's writing. It consists of six small plants of this species. 

 A specimen of this number in the United States National Herbarium, also labeled 

 in Fournier's hand, is also this species. 

 Panicum repens confertum Vasey, Bull. Torrey Club 13: 25. 1886. "Collected in 



Louisiana by A. B. Langlois." The type, in the 

 National Herbarium, was collected "In sandy beach 

 of Gulf, B[ay] St. Louis, Miss., 13 Sept., 1883," the 

 l^ublished locality being an error, doubtless due to 

 the fact that the printed label bears Langlois 's home 

 address, "Pointe-a-la-Hache, La.," the written 

 locality being overlooked. 



Panicum halophilum Nash in Lloyd & Tracj^, 

 Bull. Torrey Club 28: 86. 1901. Based on "P. 

 repens L. var. confertum Vasey, not P. confertum 

 Desv. 1816." A description is given and one 

 specimen cited. Petit Bois Island, Miss., Tracy 4566. 



Fig. 77.— p. gouini. From type 

 specimen. 



«Biol. Centr. Amer. Bot. 3 : 489. 1885. 



