160 



5 Annual or perennial. Glunies more or less unequal. 

 Valves lanceolate to broadly oblong, rounded 

 on the back or keeled, r)-9-nerved ; awn close 

 to or somewhat distant from the often 2-toothed 

 tip, rarely Styles distinctly lateral on a 

 hairy 2-3 lo])ed appendage of the ovary, Bromos. 



6 Valves 7-9-nen-ed ; awn terminal, rarely 0. Spike- 

 lets in a raceme. Brachypodium. 



TRIBE X\^. HORDED. 



Spikelets solitary at the nodes of the spike, with their 

 plane radial to the rhachis. Lower glume 

 generally suppressed except in the terminal 

 spikelet,' contiguous with the rhachis, upper 

 one rigidly herbaceous, many nerved. Valves 

 herbaceous to chartaceoiis, 5-7-nerved. Lolium. 



B. Blades transversely veined, (in South African species). 



TRIBE XVn. PHARE^. 



The only South African genus. Olyra. 



TRIBE x^^^. bamruse^. 



Stamems 3. Fruit a true caryopsis. Ardndinaria. 



List of Species. 



10 Afldropogon, Linn. 



1 Imperata, Cyr. 

 ariindinacea, Cyr. 



'1 Sacchamm, Linn. 

 Munroaniuu, Hack. 



3 Erianthus, Michx. 

 capensis, Nees. 



4 Poilinia, Trin. 

 nuda, Triii. 

 villosa, Spreng. 



5 IschaBmum, Linn. 

 fasciculatum, Brogn. 



f) RottbcBllia, Linn f. 

 compressa, Linn. 



7 Ureiytram, Haclc. 

 squarrosum. Hack. 



8 Trachypogon, Nees 

 polymorphus, Hack. 



9 Elionurus, Humh. ^' Bonp. 

 argenteus, Nees. D 



A-E 



C. 



A-EZ. 



A 



AE 



AZ 



