140 VASCULAR PLANTS. 



ed. Glumes 2, narrow, carinate. Palets 2; 

 lower coriaceous, oo-nerved, not carinate; up- 

 per carinate with involute margins. Ovary 

 stipitate; caryopsis obovoid, free. 



2£. creeping; leaves rigid, distichous, spread- 

 ing; panicle spicate-racemose. 



26. Lophochlaena, Nees. 



Spikelets go -flowered : flowers £ . Ehachis 

 articulate, deciduous. Glumes 2, shorter than 

 the flowers; upper 3-nerved; lower smaller, 

 1-nerved. Palets 2: lower chartaceous oo- 

 nerved, membranaceous at the apex, 2-lobed, 

 aristate from the cleft; upper complicate, char- 

 taceous, margin and apex membranaceous, 2- 

 nerved, 2-carinate, margin dentate; apex emar- 

 ginate. Caryopsis compressed, 2-horned. 



0. leaves short; panicle secund, simply 

 racemose. 



27. Glyceria, R. Br. 



Spikelets go -flowered. Glumes 2, obtuse; 

 the lower shorter, Palets 2; upper 2-carinate; 

 lower concave, ovate, rotund, 7-nerved. Cary- 

 opsis free. 



U- aquatic; leaves flattened; branches of the 

 panicle semi-verticillate. 



28. Poa, L. 



Spikelets 2 — go -flowered. Glumes 2, blunt. 



