80 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Guatemala: Escuintla, J. D. Smith 2705, 2706; Morales, Kellerman 6267; Alta 



Vera Paz, Cook 8c Griggs 579; Gualan, Learn 6268. 

 Honduras: Cortez, Kellerman 4725. 

 Salvador: Izalco, Pittier 1960; San Salvador, Velasco in 1906; without locality, 



Renson 293. 

 Costa Rica: San Jose, Pittier 9050; Alajuelita, Pittier 2995, Tonduz 2995;° Boca 



Banana, Tonduz 9114; Zent Farm, Pittier in 1904. 

 Bermudas: Brown & Britton 20. 



Bahamas: Nassau, Curtiss W. I. PI. 124; Eleuthra, Geogr. Soc. Baltimore 338. 

 Cuba- Pinar del Rio, Pa Imer & Riley 377; El Guama, Palmer & Riley 178; San 



Diego de los Banos Palmer & Riley 542, 545; Guanajay, Palmer & Riley 816; 



Santiago de las Vegas, Hitchcock 157, Wilson 438; Santiago, Leon & Voisard 



915, Pollard, Palmer & Palmer 283; Guines, Leon 427, Liebmann 445 in part; 



Herradura, Hitchcock 156; Guayabal, Leon 921; Marianao, Leon 957. 

 Jamaica: Gordon Town, Hart 797; Port Antonio, Fredholm 3319. 

 Porto Rico: Cayey, Sintenis 2468; Mayaguez, Sintenis 51; El Sobrante, Eggers 



1226; Guanica, Sintensis 3366; Martin Pena, Heller <k Heller 377. 

 Danish West Indies: St. Croix, Ricksecker 200, 413; St. Thomas, Eggersin 1887, 



Millspaugh 454. 

 Leeward Islands: Guadeloupe, Duss 3186. 

 Windward Islands: Martinique, Duss 1288; Barbados, DasA 259; Granada, 



Broadway in 1905. 

 Colombia: Santa Marta, Smith 2153; Magdalena, Pittier 1617. 

 Venezuela: Island of Margarita, Miller & Johnston 177. 

 Brazil: Province of Ceara, Gardner in 1838; Rio, Glaziou 18627; without locality, 



Glaziou 16612, Riedel 53. 



40. Panicum plenum sp. no v. 



DESCRIPTION. 



Plants mostly in large clumps, 1 to 2 meters high, erect, from a stout rootstock, 

 mostly glaucous; culms robust, compressed, glabrous, usually decumbent at base, 



sometimes branching at the lower nodes; sheaths 

 overlapping on the short lower internodes, shorter 

 than the upper, glabrous, or the lower sometimes 

 pubescent toward the summit, more or less keeled ; 

 ligules densely ciliate, about 2 mm. long; blades 

 erect or ascending, or the lower spreading, flat, 20 

 to 35 cm. long, 7 to 17 mm. wide, glabrous on both 

 surfaces or rarely sparsely pilose on either surface 

 toward the base, the upper surface scarcely scab- 

 rous; panicles 20 to 50 cm. long, about two-thirds 

 as wide, the slender branches somewhat spreading, 

 the general appearance much like that of P. bul- 

 bosum but proportionately wider, the main axis 

 nearly smooth; spikelets 3 to 3.4 mm. long, 1.2 mm. 

 wide, oblong-elliptic, glabrous, rather strongly 

 nerved; first glume scarcely half the length of the spikelet or less, subacute, 3-nerved; 

 second glume and sterile lemma subequal, scarcely exceeding the fruit, the palea 



Fig. 



-P. plenum. From type 

 specimen. 



a Some of the Pittier collections were distributed with the name of Tonduz as col- 

 lector. The numbers are in one series, some of the plants having been collected by 

 Pittier, some by Tonduz, and a few by Biolley. The labels may be marked, "Herb. 

 Instit. physico-geogr. nat. costaricensis," or, "Plantae costaricenses exsiccatae." 



