46 



Fig. 31. I/uziola alabamensis Chapm.— a, A pistillate spikelet; 6, a staminate 

 spikelet; c, a pistil; d, a grain or caryopsis. 



31. LUZIOLA Juss. Gen. PL 33. 1789.— Spikelets small, ovate, unisexual, 

 monoecious, the male and female in separate panicles in our species, 1-flowered, 

 arranged along the continuous panicle-branches, articulated with the pedicels. 

 Empty glumes none; flowering glume and narrower palea of the staminate 

 spikelets thin-membranaceous, awnless; stamens 6 to 18. Female spikelets 

 smaller than the staminate, and the rather broad glume many-nerved; 

 stamens none. Styles short, distinct; stigmas plumose. Grain ovate, free 

 within the glume and palea. Marsh or aquatic grasses, creeping or floating at 

 the base, with flat leaves, and terminal or axillary diffuse panicles. 



Species 6, in the warmer parts of North and South America. 



