156 THE TRUE GRASSES. 



pMeoides Pers., in the regions of the Mediterranean 

 (Fig. 80). 



228. (229) Catabrosa Beauv. Spikelets small ; two- 

 flowered ; empty glumes almost nerveless and very obtuse, 

 much shorter than the awnless, indistinctly three-toothed 

 flowering glume. Creeping, aquatic grasses with open 

 pyramidal panicles. 



Species one ( C. aquatica Beauv.), in Europe, Northern 

 Asia, and North America. 



229. (228) Sphenopus Trin. Small, delicate, annual 

 grasses with minute awnless spikelets upon somewhat 

 thickened pedicels. Branches of the panicle in fascicles, 

 finally spreading. 



Species one ( Sph. Gouani Trin.), along the shores of 

 the Mediterranean to the Caspian Sea. 



230. (232) Cutandia Willk. Panicles few-flowered, 

 the short branchlets thickened at the point and finally 

 strongly divaricate; spikelets narrow, loosely flowered, 

 usually awnless. Annual, low, maritime grasses. 



Species six, in the Mediterranean region. C. mari- 

 tima Benth. on the seashore. 



SUB-TIUBE E. Meliceae. 



Uppermost glumes of the spikelets empty (rarely with flowers), over- 

 lapping or embracing each other. 



231. (234) Ectrosia Brown. Panicles many -flowered, 

 narrow, compound ; spikelets with 1-2 fertile, short- 

 awned flowers, followed by 1-2 $ flowers and several 

 sterile glumes. 



Species four, in Australia. E. leporina Brown, in 

 North Australia and Queensland. 



232. (230) Harpachne Hochst. Spikelets in a simple 

 raceme with spirally arranged branches which finally fall 

 off and bore into objects by means of their pointed, 

 hairy bases ; 3-4 fertile flowers and two sterile long- 

 pointed glumes. 



Species one (H. Schimperi Hochst.), in tropical Africa. 



233. (235) Heterachne Benth. Spikelets very flat, in 

 false spikes or heads, with one fertile flower and 6-14 



