19 



111. Panicle dense and spiciform, or spicate 112 



Panicle loose, or contracted and rigid, but not dense and 



spiciform > 114 



112. Glumes 1 (near ttie base rarely 3) nerved (See also 90 and 



114) Achneria. 



Glumes 4-7 nerved 113 



113. Valves with acute hairs, not exserted from the glumes. 



Lasiochloa.. 



Valves usually with clavately tipped hairs, exserted from 



the glumes (See also 22) Brizopyrum. 



114. Florets 2, not or not much exserted from the glumes. 



Panicle trichotomously divided. (See also 90 and 112). 



Achneria. 

 Florets 2 — m.any uppermost often reduced, exserted 



from the glumes 115 



.115. Valves muticous or mucronulate, with nerves usually 

 distinct. Hilum of the seed linear. (See also 105 and 



108) Festuca. 



Valves obtuse or rarely acute, with nerves rather faint. 



Hilum of the seed punctiform. (Tribe Poeae) ... 116 



116. Panicle with very stiff rigid two ranked branches. Outer 



side nerves of the valve much more distinct than the 



faint inner Scleropoa rigida. 



Panicle not stiff and rigid. Valves more or less equally 



though sometimes faintly nerved 117 



J 17. Glumes and valves rounded on the back Atropis. 



Glumes and valves keeled. Florets often with a tuft of 

 wool at the base Poa. 



