S'SS CHLORIS MELVILLIANA. 



EXPLICATIO Tabula D.^ 



Pleuuopogon Sabinii. 1. Varietatis a, plantamagnitu- 

 dine naturali. 2. ejusd. locusta cum pedunculo et portione 

 raclieos magis aucta. 3. perianthium clausum articulo 

 racheos insidens, auctius. 4. id. expansum, pariter auctum. 

 5. valviila superior perianthii facie visa ad id. augment. 6. 

 pollen. 7. flosculus perianthio orbatus exhibens stamina 

 pistillum et lodicalas auct. uti 4 et 5. 8. Var. /3, planta 

 mag. natur. 9. ejusd. locusta cum pedunculo ad augra. id. 

 ac. 2. 10. perianthium expansum genitalia et lodicularum 

 alteram exhibens ad augm. n. 4. 



DUPONTIA. 



Char. Gen. Gluma subsequivalvis, scariosa, concava, 

 mutica, locustam 2-3-floram subsequans. Periantlda mutica, 

 scariosa, (basi barbata,) altero pedicellato; valvulis integris, 

 inferiore concava. Lodiculce 2. Ovarium mhe'chQ. Stigmata 

 subsessilia. Caryopsis - - 



Gramen glahrum,^ erectum. Polia linearia, plana, vaginis 

 semifissis, basi integra. Panicula simplex, coarctata, fusco et 

 purpurascenti varia, pedicellis cum locustis continuis, perian- 

 thiis separatim sohibilibus. 



ccxci] Obs. Ad Deschampsiam proxime accedit hocce genus ; 

 distinguitur perianthiis muticis, valvulis integris nee den- 

 tatis. Cum Catabrosa, facie diversissima, convenit pluribus 

 notis, difFert glumis locustam subsequantibus, perianthiis 

 basi breve barbatis. A Poa diversum locustis baud com- 

 pressis, glumis perianthiisque concavis nee carinatis. Ad 

 confirmandum genus caryopsis desideratur. 



This genus is named in honour of Monsieur Dupont, of 

 Paris, author of a valuable essay on the Sheath of the leaves 

 of Grasses, and of. observations on the genus Atriplex. 



' See No/eat p. 187. 



