Me. G. BENTHAM on OEAMINEiE. 31 



Subtribus 3. Arundineae. Rhachilla sub glumis florentibus longe pilosa. 

 Subtribus 4. Seslerieae. Inflorescentia spiciformis v, capituliformis, basi 



glumis vacuis v. spicis sterilibus seepius stipata. Stylus v. rami sapius 



longi tenues. 

 Subtribus 5. Eragrostese. Glumte florentes trinerves. Ccetera normalia. 

 Subtribus 6. Melicese. Glumai florentes tri- v. plurinerves, superiores 



dual V. plures vacua, semet involventes. 

 Subtribus 7. Centothecese. Folia plana, lanceolata v. ovata, inter venas 



transverse venulosa. Glumm florentes quinque- v. plurinerves. 

 Subtribus 8. Eufestuceae. Glumes florentes quinque- v. plurinerves. 



CcBtera normalia. 

 Tribus xiii. Hordeese. Spiculse uni- v. pluriflorse, ad dentes seu excava- 



tiones rhacheos spicse simplicis sessiles. 

 Subtribus 1. Triticese. Spicules ad nodos solitaria, tri- v. pluriflorcB, 



rarius biflorce. 

 Subtribus 2. Leptureee. Spicules ad nodos solitaries, uni- v. bifiores. Spica 



tenuis. 

 Subtribus 3. Elymeae. Spicules ad nodos geminee v. plures collaierales. 

 Tribus xiv. Bambuse . Gramina elata, ssepius basi saltern lignosa. 



Folia plana, ssepissime cum vagina articulata. Spiculae uni- v. pluri- 



florje. Lodiculse ssepius 3. Stamina 3, 4, v. plura. 

 Subtribus 1. Arundinariese. Stamina 3. Paleabicarinaia. Pericarpium 



tenne, semini adnatum. 

 Subtribus 2. Eubambusese. S^amiraaC. Paleabicarinaia. Pericarpium 



tenue, semini adnatum. 

 Subtribus 3. Dendrocalameae. Stamina 6. Palea bicarinata. Peri- 

 carpium crustaceum v. carnosum, a semine liberum. 

 Subtribus 4. Melocannere. Stamina 6 v. plura. Palea nisi glumis 



simillima. Pericarpium crustaceum v. carnosum, a semine liberum. 



T now proceed to a more detailed revision of the several tribes, 

 subtribes, and genera, in the order in which I have worked theni 

 up for the forthcoming part of our ' G-enera Plantarum,' to which 

 I must refer for the technical characters and references, as well 

 as for the synoptical clavis of the genera. 



Series A. PANICACE^. 

 This .first main division of Gramiaeas is very fairly defined by 

 the combination of two characters — the articulation of the pedicel 

 below the spikelet or cluster of spikelets, and the single fertile 

 flower apparently terminal, with or without a single male or 

 sterile one below it. "Where either of these two characters fails, 

 the plant should be referred to Poaceee. 



The articulation of the pedicel is usually immediately below 



e2 



