15 



55. Inflorescence oi' 2-5 stout racemes 



Axonopus semialalus var. ecklonii. 

 Inflorescence a loose (rarely contracted) panicle. (See 



also 12) Panicuni. 



5(5. Glumes awned 57 



Glumes awnless or shortly mucronate 59 



57. Valve 1 nerved Perotis latifolia. 



Valve more than 1 nerved 58 



58. Glumes persistent, gradually passing- into the awn. (See 



also 64) Agrostis polypogonoides. 



Glumes deciduous, emarginate, with an awn from the 

 sinus Polypogon. 



59. Valves awned 60 



Valves awnless 60 



60. Awns of valve 3, or 3 branched Aristida. 



Awns of valve solitary 01 



61. Floret exserted from the glumes Pseudobromus africaiius. 



Floret not exserted from the glumes 62 



62. Nerves of valve parallel, not joining at the tip, often 



slightly excurrent 63 



Nerves of valve closely approaching or joining at the 

 tip 65 



63. Glumes covered with long soft hairs ... Lagurus ovatus. 

 Glumes not covered with long soft hairs 64 



64. Valve decurrent into a callus, which has hairs several 



times longer than the valve itself 



Calamagrostis epigeios var. capensis. 

 Callus glabrous or minutely hairy. (See also 58 and 70)... 



Agrostis. 



65. Awn kneed Slipa. 



Awn straight or Oryzopsis iniliacea. 



66. Lower glume minute or O. Upper glume with hooked 



spines or bristles Tragus. 



Both glumes distinct, not spiny nor with bristles ... 67 



67. Valve decurrent into a callus, which is conspicuously 



hairy Ammophila arundinacea. 



Callus, if present, not conspicuously hairy 68 



68. Valve more than 3 nerved 69 



Valve 3-1 nerved 70 



09. Valve faintly 7 nerved, silky villous. Poagrostis pusilla. 

 Valve faintly 5 nerved, smooth. (See also 64) ... 



Agrostis verficillata. 



