126 SOUTH INDIAN GRASSES 



12. Hygrorhiza, Nees. 



These are floating glabrous grasses with stems diffusely 

 branching and profusely rooting at the nodes. The inflorescence 

 is a panicle. The spikelets are I-flowered, with a solitary flowering 

 glume only. The flowering glume is awned, strongly 5-nerved, 

 nerves scabrid and ciliate, the lateral nerves being marginal. 

 Palea is 3-nerved, narrow acuminate with a ciliate keel. Lodicules 

 are suborbicular. There are six stamens with long slender anthers. 

 Styles are free with plumose stigmas, laterally exserted. Grain is 

 oblong, narrowed at the base, obtuse, free within the glume and 

 its palea. 



