HITCHCOCK AND CHASE NORTH AMERICAN PANICUM. 121 



64. Panicum stoloniferum Poir. 



Panicum stoloniferum Poir. in Lam. Encycl. Suppl. 4: 274. 1816. "Cette plante 

 croit a, Pile de Cayenne. " The t} r pe is in the Cosson Herbarium. 



Panicum ctenodes Trin. Gram. Icon. 2: pi. 171. ]829. Trinius cites no specimen 

 nor particular locality, but states that the figure is "ad specimen Brasiliense. " There - 

 is apparently no specimen in the Trinius Herbarium bearing this name, but in the 

 Berlin Herbarium is a specimen from Trinius which is probably a part of the type, 

 and which bears the name in Trinius 's handwriting. It was collected in Brazil by 

 Beyrich. 



Panicum leprieurii Steud. Syn. PI. Glum. 1: 65. 1854. Two specimens are cited, 

 "P. stoloniferum Hochst. Hrbr. Kappler nr. 1500. Surinam et Leprieurva. Cayenne." 

 On account of the specific name Leprieur's specimen is taken as the 

 type. This is in the Steudel Herbarium at Paris. It is a some- 

 what undersized specimen labeled, "Cayenne, Leprieur 1835." 



DESCRIPTION. 



Plants creeping, freely branching; culms 10 to 50 cm. long, with 

 two opposite lines of minute crisp pubescence, rarely pubescent all 

 over or glabrate, the nodes pubescent or glabrous; sheaths shorter 

 than the internodes or overlapping on the branches, cilia te, other- 

 Fig. 114.— P.stoloni- w i se glabrate, or crisp-pubescent; ligules fimbriate, about 0.2 mm. 



ferum. From j blades 1 to 5 cm. long, 3 to 15 mm. wide, the margins undu- 



type specimen. °' .?' ' . ° , 



late, glabrous or sparsely pilose on the upper surface, minutely soft- 

 pubescent beneath; panicles 1 to 5 cm. long, about one-third as wide, racemes 5 to 10 

 mm. long, ascending or spreading, the main axis more or less pubescent; spikelets 

 2.3 to 2.5 mm. long, about 0.6 mm. wide and 1 mm. thick, glabrous; first glume about 

 one-third the length of the spikelet, 3-nerved, blunt; second glume blunt, shorter than 

 the acute sterile lemma, both somewhat boat-shaped, 5-nerved, the sterile palea about 

 half as long as its lemma; fruit 1.3 mm. long, 0.5 mm. wide, acute. 



DISTRIBUTION. 



Woods and low grounds, Guatemala to Brazil and Ecuador. 

 Guatemala: Puerto Barrios, Pittier 364. 

 Trinidad: Broadway 2370; Crueger 79, Bot. Gard. Herb. 2293. 

 British Guiana: Jenman 4081. 



Dutch Guiana: "Surinam" Bering (Acad. Phil. Herb.). 

 French Guiana: Sagot667. 

 Brazil: Beyrich (Trinius Herb.). 

 Ecuador: Balao, Eggers 14149. 



65. Panicum frondescens Meyer. 



Panicum frondescens Meyer, Prim. Fl. Esseq. 56. 1818. "In graminosis umbrosis 

 insulae Arouabisch" [British Guiana]. We have not examined the type, which is at 

 Gottingen, but we have seen in the Trinius Herbarium a portion of it which was sent 

 by Meyer. 



Panicum olyraejolium Raddi, Agrost. Bras. 43. pi. l.f. 6. 1823. Raddi states a that 

 this occurs "in sepibus prope fossas udas in viciniis Rio- Janeiro." We have not seen 

 the type of this, but the description and figure agree with P . Jrondescens . 



a Op. cit. 44 under P. donacijolium. 



