Chase — Notes on Genera of Panicex. II. 5 



** Panicle long and narrow with ascending branches, not spike-like. 



Hymenachne auriculata (Willd.). 



Panicum auriculatum Willd. 1825, ex Spreng: Syst. 1 : 322. "Ainer. 

 austr." The type, labeled "Amer. merid. Humboldt," is in the Willde- 

 iii >\v herbarium, Berlin. 



Panicum polystachyum Presl 1830, Rel. Haenk. 1: 312. " Hab. in Pe- 

 ruvia." (Not P. polystachyum Schult. 1824, Mant. 2: 146. ) The type, in 

 the Presl herbarium in the National Museum, Prag, is labeled "Regno 

 montana, Peru." 



Brasil and Peru. 



Hymenachne palustris (Trim). 



Panicum paluslre Trim 182(5, Gram. Pan. 181. " V. spp. Brasil. 

 (Langsdorff.)" The type bearing the label " Panicum palustre m. Brasil 

 Langsdorff. In fossis serra dos Orgonos," is in the Trinius herbarium, 

 in the St. Petersburg Academy of Sciences. 



Panicum paluddcola Nees in Trim 1. c. as synonym sub P. palustre ; 

 ls2i), Agros. Bras. 179. The specimen in Trinius' herbarium is cited and 

 Panicum palustre Trim is given as synonym. 



In the Icones 2, pi. 218, Trinius reduces P. palustre to a synonym of 

 Panicum frondescens Meyer, but from Meyer's description and a specimen 

 from Brasil determined by Xees this seems to be a species related to Pani- 

 cum stoloniferum Poir. Plate 218 is drawn from a Brasil specimen, and 

 agrees with the specimens of P. paluslre in Trinius' herbarium. 



Panicle less dense than in the preceding, spikelets larger. 



Brasil. 



Two species represented in the National Herbarium, one from Uruguay 

 and one from the Philippines, remain to be identified with published 

 names or to be described. 



The following species should be excluded from Hymenachne, to which 

 genus they have been referred by various authors: 



Hymenachne boiviniana Steud = Sacciolepis? 



Hymenachne campestris Nees = Sacciolepis. 



Hymenachne fluviatilis Nees = Sacciolepis. 



Hymenachne frondescens (Meyer) Fourn. . . = Panicum. 

 Hymenachne indica (L) Buese . . . . = Sacciolepis. 

 Hymenachne inter rupta (Willd. ) Buese . . = Sacciolepis. 

 Hymenachne leptostachya (Presl) Fourn. . . — Panicum? 

 Hymenachne myosurqides (R. Br.) Balansa = Sacciolepis. 

 Hymenachne myosurus (Rich. ) Nees . . . .= Sacciolepis. 

 Hymenachne myuros ( Lam. ) Beauv. . . = Sacciolepis. 

 Hymenachne phalarioides (R.itS. ) Xees . . = Sacciolepis? 

 Hymenachne phleiformis (Presl) Fourn. . . = Sacciolepis. 



Hymenachne polymorpha Balansa = Sacciolepis? 



Hymenachne striata ( Lam. ) Griseb — Sacciolepis. 



None of the above species is here transferred. 



