Victorian Plants. 489 



2064. Awn of about the length of the spikelet. 



Seldom tall ; leaves rather short, much pointed, flat towards 

 their base ; panicle somewhat spreading, its branches 

 rather short and rigid ; spikelets on very short stalks, few 

 or several ; outer bracts shorter than the inner, often 

 purplish-dark ; awn without any torsion, sessile and con- 

 tinuous with its bract, the three divisions very short ; 

 fruit narrow, loose within its bracts. A. vagaiis. 



Awn of considerably greater length than that of the 

 spikelet ... 2065 



2065. Spikelets almost racemously approximated. 



Rather tall ; leaves very narrow, filiform upwards, much 

 pointed ; panicle rather long, contracted, its branches 

 mostly short ; spikelets from rather few to several, sessile 

 or on very short stalks ; outer bracts often purplish-dark, 

 finely pointed, about as long as the inner ; awn sessile, 

 without any torsion, continuous with the fruit-supporting 

 bract, its divisions of moderate length ; fruit narrow, loose 

 within its bracts. A. calycina. 



Spikelets almost fascicularly approximated. 



Desert-plant, somewhat diffuse, never tall ; leaves upwards 

 almost filiform ; panicle dense, comparatively broad, its 

 branches short ; spikelets numerous ; outer bract about 

 half as long as the next, both gradually much pointed, the 

 second longer than the inner bracts ; awn sessile and con- 

 tinuous with its bract, without any torsion, its divisions 

 rather long, slightly rough ; fruit narrow, loose within its 

 bracts. A. Behriana. 



STIPA. 



2066. Fruit-supporting bract beset with hairlets ... ... 2067 



Fruit-supporting bract glabrous ... ... ... 2073 



2067. Membrane at the inner base of the leaves without 



any cilioles ... 2068 



Membrane at the inner base of the leaves much 

 changed into cilioles 2070 



2068. Membrane at the inner base of the leaves elongated. 



Slender, somewhat tall ; leaves rather short, narrow, 

 involute along the margin ; panicle spreading, its branches 

 mostly short, nearly glabrous ; outer bracts gradually 

 pointed ; fruit-supporting bract much abbreviated ; awns 

 long, capillary, somewhat bent, slightly rough, hardly 

 twisted ; fruit loose within its bracts. S. setacea. 



