32 Ci?^) GRAMINEAE. 



DIPLOPOGON. 



Gluma uniflora, blvalvis, laxa, membranacea, aristata. Pe- 

 rianthium bivalve; valvula exterior -dpice triaristata , arista 

 intermedia dissimili tortili : interior biaristata. Spica ca- 

 pituliformis, 



Obs. Habitus et inflorescentia penitas Amphipogonis lagu- 

 roidis J floribus extimis pariter sterillbus involucramq^ue 

 efformantibns. 



D. setaceus, (M.) v. v, 



ANISOPOGON. 



Gluma uniflora, bivalvis, aeqiialis^ membranacea, laxa, ner- 

 vosa. Perianthium pedicellatnm , bivalve; valvula exte- 

 rior cylindraceo-involnta , apice triaristata, arista inter- 

 media dissimili tortili , lateralibus setaceis : interior lon- 

 gior , mutica. 



Gramen trip e dal e , forma Avenae. Culmi simplices. Folia 

 involuta , ligula ciliata. Panicula ejfusa. Glumae magnae. 

 Perianthii valvula exterior sericea cum arista obsolete 

 articulata. 



Setula ad basin valvulae interioris arctiorem affinitatem 

 cum Dantbonia, quam cum Aristida, indicat. 



A. avenaceus (I.) v, v. 



DAJNTHOWIA. Decand.ßor. franc. 5. p. 52. 



G/M7?za bi-raultiflora , bivalvis, membranacea , laxa , periantbio 

 longior. Perianthium bivalve; valvula exterior inferne 



o . . . • • 



definite barbata , superne imberbis, apice triaristata, 

 arista intermedia dissimili tortili quandoque abbreviata: 

 interior mutica. 



Gramina forma et similitudine Avenae , cui certe quam 

 maxime ajfinia. 



Oj5S. In Africa Australi species ultra decern legi, quarum 

 plures gluma biflora flosculo altero pedicellato , babita 

 etiam, a plantis Novae Hollandiae parum diversae, vix 

 tamen separandae : an potius segregandae species aristis 

 abbreviatis , nempe D. paradoxa et decumbens ? 



I. D. longifolia, panicula effusa, spiculis snbquadrlfloris 

 gluma laevi brevioribus , periantbii valvula exteriori ad 

 medium villosa villis supremis elongatis valvulam occul- 



