ME. a. BENTHAM ON GBAMINE^. 103 



with one to three empty awued glumes above the floweriug one, 

 are quite those of Ghloris. The two southern species had long 

 been indicated and named in herbaria as constituting an inde- 

 pendent genus (the one by J. G-ay, the other by Munro) ; but 

 never having been published, we must adopt Fournier's generic 

 name for the whole. The two southern species (from Chili, 

 Tucuman, and Buenos Ayres) are indeed so very near T. fasci- 

 culttta, Fouru., that it will require close investigation to estab- 

 lish their specific differences. Another different-looking plant 

 from Tucuman (Tweedie), much smaller, with a loose inflores- 

 cence and short-awned spikelets, shows also the essential cha- 

 racters of Trichloris. 



9. Gtmnopogon, Beauv. (Anthopoffon, Nutt.), differs from all 

 the preceding one-flowered genera in the spikelets not closely 

 crowded, but more or less distant along the slender rhachis of the 

 spikes, althoiigh still sessile in two rows and unilateral ; the spikes 

 themselves are scattered or verticillate along the common pe- 

 duncle. There are four or five American species, northern or 

 southern, and one from Ceylon, G. rigidus, Thw., forming Nees's 

 genus Dichcetaria, but only differing from the American ones in 

 the spikes fewer in the panicle, and the spikelets rather larger with 

 longer awns. Doell's G. foliosm and G. pullulans should be 

 restored to Ghloris, with which they agree in every respect except 

 that the spikes are not quite so closely clustered at the end of 

 the peduncle. 



10. MoNoCHjsTE, Doell, a single Brazilian species of which I 

 have seen no specimeu, is removed by Doell from Gymnopogon, 

 where Martius had placed it, as having no continuation of the 

 rhachilla beyond the flower. Nees, however, describes a bristle- 

 like continuation, but not bearing any empty glume or awn 

 as in Gymnopogon. The genus is as yet, therefore, in some 

 measure doubtful. 



11. ScnEnoNNAKDUs, Steud., is the. North- A.merican Leptu- 

 rus paniculatus, Nutt., wliich, however, Steudel failed to recog- 

 nize. Nuttall indicated its aflS^nity to Gymnopogon, and evidently 

 only placed it in Lepturus from not knowing the latter genus 

 except from the imperfect characters then published. ScJiedon- 

 nardus has now been figured in the last part of Hooker's Icones ; 

 the description, accidentally omitted in printing, will appear in 

 the next part. 



12. Ceaspedoehachis, Benth., is a single species from east 

 tropical Africa, allied to Schedonmrdtts, but differing in the 



