Chase — Notes on Genera of Vanicece. IV. 153 



Beauvois ( Ess. Agrost. 54. 1812) amplifies his earlier generic descrip- 

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

 Oplismi nus immediately after Echinochloa. 



Kunth ( 11. B. K. Nov. Gen. & Sp. I : L06. L816) recognizes OpUsmenus 

 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 : 4:\. L829; Enum. PI. 1 : 138. 1833). 



Desvaux (Opusc. si. 1831) follows Kunth. but also includes Panieum 

 semialatum in the genus. 



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

 genus, referring OpUsmenus to it as a synonym. 



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



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

 Nat. 3 J : 20°. 1834) reduces Orthopogon to a section of Panieum. 



Nees (Agrost. Bras. 255. 1829; Fl. Afr. Aust. 00. 1841* gives OpUs- 

 menus generic rank. 



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

 Orthopogon a section of Panieum ami giving OpUsmenus as a synonym. 



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

 (Linnaea 111 : 263. 1861) spell the generic name Hoplismenus. 



Bentham (Fl. Hongkong 400, 411. 1801) includes OpUsmenus in Pani- 

 eum, but later (Fl. Austr. 7 : 41)1. 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 Panieum crusgalli and allies 

 referred to it by Kunth. 



Grisebach (Fl. Brit. W. Ind. o44. 18(54) recognizes Orthopogon as a 

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

 144. 1S77) includes Orthopogon, in the same sense, as a section of Pani- 

 eum, giving OpUsmenus as a synonym. 



Bentham (Benth. & Hook. Gen. PI. ."» : 1077, 1104. 1883) gives OpUs- 

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

 33, 36. 1887). 



Founder (Mex. PI. 2 : 37. 1880) maintains OpUsmenus as emended by 

 Kunth, that is, including Echinochloa. 



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

 Paniculum Anl. as asynonym of OpUsmenus. The name " PANICULUM 

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

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

 on the plate is Panieum undulatifolium. 



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

 imate or distant alonga common, often flexuous axis, the racemes bearing 

 many crowded or subdistant spikelets, or sometimes very short and 

 bearing a single cluster ; spikelets terete or somen hat 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 lsf>:J with the title "Agrosto- 

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



