500 



CONTEIBUTIONS FROM THE NATIONAL HEEBAEIUM. 



STOLONIFERA. 



Spikelets hispid and with 2 crateriform glands on the sterile lem- 

 ma; second glume and sterile lemma not boat-shaped. 

 Spikelets not over 2 mm. long; blades not over 4 cm. long. . 61. P. pulchellum. 



Spikelets 3.6 mm. long; blades 4 to 10 cm. long 62. P. biglandulare. 



Spikelets glabrous, glandless; second glumcgand sterile lemma "* 



boat-shaped. 

 Blades not over 5 cm., usually 2 or 3 cm., long; second glume 



rather blunt and shorter than the sterile lemma 59. P. stoloniferum. 



Blades 5 to 11 cm. long; second glume acute, nearly equaling 



the sterile lemma 60. P. frondescens. 



69. Panicum stoloniferum Poir. 



Panicum stoloniferum Poir. in Lam. Encycl. Suppl. 4: 274. 1816; Contr. U. S. Nat. 

 Herb. 15: 121. 1910. 



DISTKIBUTION. 



Moist shady places, Guatemala to Brazil. The type specimen from Cayenne. 



Guatemala: Puerto Barrios, Pittier 



364. 

 Panama: Frijoles, Amer. Gr. Nat. 



Herb. 62. 

 Windward Islands: Martinique, 



Duss 1291 (K. U. Herb.). 

 Trinidad: St. Aims Yalley, Bot.Gard. 



Herb. 2293. Aqua Santa Arima, 



Broadway 2370. Without local- 

 FiG. 81.— Distribution of P. stoloniferum. ity, Crueger 79. 



60. Panicum frondescens Meyer. 



Panicum frondescens Meyer, Prim. Fl. Esseq. 56. 1818; Contr. U. S. Nat. Herb. 15: 

 121. 1910. 



Hymenachne frondescens Fourn. Mex. PI. 2: 36. 1886. Based-on Panicum frondescens 

 Meyer. 



A specimen in the Berlin Herbarium, Seler 5024, without locality other than Mexico 

 and Central America, is exceptionally lax and is peculiar in having occasional spike- 

 lets with glands on the sterile lemma as in P. pulchellum and P. biglandulare. In 

 most of the spikelets there are a few hairs along the margin of the sterile lemma. Fur- 

 ther collections may show this to be a distinct species. In Pittier 6328, cited below, 

 a few spikelets bear glands, but all are glabrous. 



DISTRIBUTION. 



Moist woods, Mexico to Brazil. The type specimen from British Guiana. 



Veracruz: ' Papantla, Liebmann 



405. 

 Tabasco: Sebastian, Rovirosa 



497. 

 Guatemala: Dept. Peten, Walker 



1138. 

 Costa Rica: Hacienda de Zent, 



Tonduz 259. 

 Panama: Trinidad Basin, Pittier 



4027. Fig. 82.— Distribution of P.frondescer^. 



