Chase — Notes on Genera of Panieete. IV. 153 



Beauvois (Ess. Agrost. 51. 1812) amplifies his earlier generic descrip- 

 tion and transfers to the genus several species from Panicum. He places 

 Oplismenus immediately after Echinochloa. 



Kunth (H. B. K. Nov. Gen. & Sp. 1 : 106. 1816) recognizes Oplismenus 

 as a genus, including under it as synonymous Orthopogon R. Br. and 

 Echinochloa Beauv. The same is done in his later works (Rev. Gram. 

 1 : 43. 1829; Enum. PI. 1 : 138. 1833). 



Desvaux (Opusc. 81. 1831) follows Kunth, hut also includes Panicum 

 semialalum in the genus. 



Trinius (Fund. Agrost. 181. 1820) recognizes Orthopogon R. Br. as a 

 genus, referring Oplismenus to it as a synonym. 



Raddi (Agrost. Bras. 40. 1823) recognizes Oplismenus. 



Trinius (Gram. Pan. 51, 153. 1826; Mem. Acad. St. Petersb. VI. Sci. 

 Nat. 3 2 : 209. 1834) reduces Orthopogon to a section of Panicum. 



Nees (Agrost. Bras. 255. 1829; Fl. Afr. Aust. 60. 1841* gives Oplis- 

 menus generic rank. 



Steudel (Syn. PI. Glum. 1 : 44. 1854) follows Trinius in making 

 Orthopogon a section of Panicum and giving Oplismenus as a synonym. 



Hasskarl (Cat. PI. Hort. Bogor. Alt. 16. 1844) and Schlechtendal 

 (Linnaea 31 : 263. 1861) spell the generic name Hoplismenus. 



Bentham (Fl. Hongkong 409, 411. 1861) includes Oplismenus in Pani- 

 cum, but later (Fl. Austr. 7 : 491. 1878) he gives it (with Orthopogon as 

 a synonym) generic rank " with the limits originally assigned to it by 

 Beauvois and by Brown," that is excluding Panicum crusgalli and allies 

 referred to it by Kunth. 



Grisebach (Fl. Brit. W. Ind. 544. 1864) recognizes Orthopogon as a 

 genus for the group thus circumscribed, and Doell (Mart. Fl. Bras. 2 2 : 

 144. 1877) includes Orthopogon, in the same sense, as a section of Pani- 

 cum, giving Oplismenus as a synonym. 



Bentham (Benth. & Hook. Gen. PI. 3 : 1077, 1104. 1883) gives Oplis- 

 menus generic rank as does Hackel (Engler & Prantl, Pflanzenf. 2 2 : 

 33, 36. 1887). 



Founder (Mex. PI. 2 : 37. 1886) maintains Oplismenus as emended by 

 Kunth, that is, including Echinochloa. 



Dalla Torre and Harms (Gen. Siphonog. 14. 1900) give the name 

 Paniculum Ard. as a synonym of Oplismenus. The name ' ' PANICULUM 

 undulatifolium" occurs in Arduini (Animadv. Bot. Spec. 2:14. pi. 4. 

 1764), but the generic name is an error for Panicum. The name printed 

 on the plate is Panicum undulatifolium. 



Description. — Inflorescence of few to many unilateral racemes, approx- 

 imate or distant along a common, often flexuous axis, the racemes bearing 

 many crowded or subdistant spikelets, or sometimes very short and 

 bearing a single cluster; spikelets terete or somewhat compressed laterally, 

 subsessile, in pairs or solitary in two rows on one side of a narrow, 

 scabrous or hairy rachis; glumes subequal, emarginate or 2-lobed (rarely 

 entire), awned or mucronate from between the lobes; sterile lemma ex- 



*The second edition of this work was published in 1853 with the title "Agrosto- 

 graphia Capensis." The pagination is the same in both. 



