30 Me. g. bentham on geamine^. 



Subtribus 1. Anthephoreffi. Spiculm in pedicello 3-oo, in fasciculum 

 deciduum conferta. Gluma florens nunc vacuis sublongior, nunc 

 brevior hyalina. 

 Subtribus 2. Euzoysiese. Spiculeein pedicello soUtarice, rarius gemina. 



Glmnajlorens vaouis brevior, hyalina. 

 Tribus vi. Andropogonese. Spiculse secus spicse rhachin v. panicula: 

 ramulos, ssepissirae geminse v. terminales ternse, in quoque pari homo- 

 gamse v. heterogamae. Gluma florens vacuis minor, hyalina, ssepe 

 aristata. 

 B. PoAOBiB. Pedicellus infra glumas continuus. Ehacbilla 

 supra glumas inferiores persistentes saepe articulata, ultra Acres 

 fertiles jwoducta, stipitiformis v. glumas vacuas v. flores imper- 

 fectos ferens, v. interdum flos fertilis more Pauicacearum unicus 

 termiualis, sed cum gluma sua a vacuis persistentibus articulatim 

 secedens. 



Tribus vii. Phalarideae. Flos hermaphroditus unicus, terminalis. 



Glumse 6 (v. 5 et palea) uninerves v. carinatse. 

 Tribus viii. Agrosteae. Spiculse 1-florse, rhachilla ultra florem uuda v. 



in setam v. stipitem producta. 

 Subtribus 1. Stipese. Panicula laxa v. irregulariterspiciformis. Gluma 

 florens arista scepius terminata, fructifera caryopsin arete involvens. 

 Rhachilla ultra florem non producta. 

 Subtribus 2. Phleoidese. Panicula spiciformis densa, cylindracea v. sub- 

 globosa. Gluma florens mutica v. aristis 1-3 terminata fructifera 

 caryopsin laxe includens. Rhachilla interdum producta. 

 Subtribus 3. Sporobolese. Panicula laxa v. ad racemum reducta, raris- 

 sime spiciformis. Gluma florens mutica. Caryopsis demum saipius 

 glumis apertis subdenudata. Rhachilla non producta. 

 Sithtvihus 4. 'EiuagrosteiB. Panicula varia, scepius laxa. Gluma florens 

 scBpius arista dorsali instructa, rarissime mutica. Caryopsis gluma 

 laxe inclusa. Rhachilla stepe producta. 

 Tribus ix. Isachneae. Spiculse sequaliter biflorae. GlumiE ssepius mu- 



ticae. Rhachilla ultra flores non producta. 

 Tribus X. Avenese. Spiculse bi- v. pluriflorae, ssepius paniculate. Gluma; 

 florentes arista dorsali v. interdum terminali sepissime instructa. 

 Rhachilla ultra idores sjepius producta. 

 Tribus xi. Chlorideae. Spicula; uni- v. pluriflora, secus rhachin spica- 



rum urilateraliura biseriatim sessiles, secunds. 

 Tribus xii. Festuceae. Spicula? bi- v. pluriflorje, varie paniculate v. 



rarius racemosse. Gluma; florentes muticse v. aristis terminata;. 

 Subtribus 1. Pappophoreje. Glumes florentes plurinerves tri- pluri- 



aristatcB, v. absque aristis quadriloba. 

 Subtribus 2. Triodiese. Gluma florentes uni- v. trinerves, tridentatm, tri- 

 fid(E V. triaristata. 



