52 



THE TRIBES AND THEIR GENERA. 



with one awn. Inner palea folded, two-ribbed, cleft. Stamens 

 three ; filaments capillary, long ; anthers pendulous, oblong. 

 Styles two, varying in length, sometimes united. Stigmas long, 

 cylindrical, feathery, protruding at or near apex of floret, with 

 short hairs on all sides. Grain ovate, smooth. 



Species. 5. ccevulea, ioo. 



Arundo. Panicle large and 

 crowded, more or less drooping. Spike- 

 lets long and narrow with many 

 florets. Lowermost floret male, the 

 others perfect. Rachilla with long 

 hairs. Glumes unequal, oblong, 

 pointed. Outer palea membranous 

 or hyaline, nerves three, long, pointed, 

 awnless or with a small terminal 

 awn. Inner palea as long as outer, 

 of same length as glumes. Stigmas 

 long and narrow, protruding from 

 the middle section of the floret. 



Numerous long, silky, silvery hairs from base of floret. Leaves 



flat and broad. 



A r u n do p hragmites . 

 Floret For Spikelet see p. 78. 



Species. A. phragmiies, 101. 



Triodia. Panicle open. Spikelets 

 alike. Florets three or more. Glumes 

 nearly equal. Outer palea coriaceous 

 or chartaceous, with three teeth and 

 parallel veins which do not join to 

 form an awn, middle tooth pointed. 

 Stamens three. Styles terminal. 

 Stigmas plumose, protruding from 

 sides of outer palea. Grain free. 



Species. T. decutnbens, 98. 



Triodia decumbens. 

 Floret. For Spikelet see p. 138. 



