228 (IRLORIS MELVILLIANA. 



EXPLICATIO Tabula D.^ 



Plkuropogon Sabinit. 1. Varietatis o, planta magnitii- 

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

 raclieos magis aucta. 3. periaiithiiim clansum articulo 

 racheos insidens, auctiiis. 4. id. expaiisnm, pariter aiicturn. 

 5. valvula superior periantliii facie visa ad id. augment. 6. 

 pollen. 7. flosculus periantliio orbatus exbibens stamina 

 pistillum et lodicnlas auct. uti 4 et 5. 8. Var. (3, [)lanta 

 mag. natnr. 9. ejusd. locusta cum pedunculo ad augm. id. 

 ac. 2. 10. perianthium expansum genitalia et lodicularum 

 alteram exhibens ad augm. n. 4. 



DUPONTIA. 



Chae. Gen. Gluma subaequivalvis, scariosa, concava, 

 mutica, locustam 2-3-floram subaequans. Perianihia mutica, 

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

 inferiore concava. Lodiculce 2. Ovarium m\hQYhQ. Stigmata 

 subsessilia. Gary apsis 



Gramen glahruin^ erediim. Folia linearia, plana, vaginis 

 semifssisy basi integra. Panicula sinqjlex, coardata, fiisco et 

 purpurascenti varia, pedicellis cum locustis continuis, jjerian- 

 thiis separatim soluhillhus. 



ccxci] (Jbs. Ad Deschampsiam pi'oxime accedit liocce genus; 

 distinguitur periantliiis muticis, valvulis integris nee den- 

 tatis. Cum Catabrosa, facie diversissima, convenit pluribus 

 notis, differt glumis locustam subsequantibus, periantliiis 

 basi breve barbatis. A Poa diversum locustis hand com- 

 pressis, glumis perianthiisque concavis nee carinatis. Ad 

 confirmandum genus caryopsis desideratur. 



This genus is named in lionour 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. 



1 See Note at p. 187. 



