THE TRIBES AND THEIR GENERA. 63 



concave, keel winged, the two pressed closely together. Outer 

 palea coriaceous and shining, lanceolate, acute, concealed within 

 the closed glumes. Inner palea oblong, concave, acute. Lodicules 

 lanceolate, transparent, pointed, inflated at base. Stamens 

 three ; filaments capillary ; anthers oblong, notched at each 

 end. Ovary ovate. Styles two, slender. Stigmas hairy. 



Species. P. canariensis, 11. 



Digraphis. Panicle interrupted. 

 Florets one. Glumes four, unequal, 

 third and fourth reduced to hairy 

 scales, first and second nearly 

 equal, boat-shaped, keel without 

 wings. Outer palea coriaceous and 

 glossy, lanceolate, acute, concealed 

 within the closed glumes. Inner 

 palea oblong, concave, acute. 

 Lodicules lanceolate, transparent, 

 pointed ; inflated at base. Stamens 

 three ; filaments capillary ; anthers 

 oblong, notched at each end. Ovary ovate, Styles two, slender. 

 Stigmas hairy. 



Species. D. arundtnacea, 12. 



Anthoxanthum. Panicle short, spike-like, narrow. Spike- 

 lets narrow and stalked. Florets 

 one. Glumes four ; first and second 

 unequal, herbaceous ; third and 

 fourth narrower, hairy, one awned 

 on the back, the other awned on 

 the base. Outer palea short; inner 

 palea like a scale. Lodicules none. 

 Stamens two. Styles long. Stig- 

 mas filiform. Grain not grooved, 

 pointed at both ends and adher- 

 ent to paleae. 



Digraphis arundinacea. 

 Floret. For Spikelet see p. 95. 



Anthoxanthum odoratum. 

 Floret. For Spikelet see p. 76. 



Species. A. odoratum, 10 



