182 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



ciliate with soft ascending hairs, the callus pilose; palea shorter than 



the lemma, wing-keeled; caryopsis flat, oval, black, 5 mm long. 



% — Rich woods, Pennsylvania and New Jersey to Illinois and 



Kansas, south to Florida and Texas (fig. 359). 



3. Uniola nitida Baldw. (Fig. 360.) Culms slender, 50 to 75 cm 



tall, erect, loosely tufted, with short rhizomes; blades flat, spreading, 



mostly less than 15 cm long, 4 to 8 mm wide; 

 panicle open, few-flowered, 10 to 15 cm long, 

 with a few spreading branches 3 to 8 cm long, 

 bearing 2 to 5 nearly sessile spikelets; spikelets 

 4- to 7-flowered, 1 to 1.5 cm long, about 1 cm 

 wide, the first lemma empty; lemmas spread- 

 ing, 7 to 10 mm long, compressed-keeled, grad- 

 ually acuminate, striate-nerved ; palea equaling 

 the lemma, acuminate, 2-toothed, the keels 

 Ql —Moist woods, South Carolina to Florida. 

 Steud. (Fig. 361.) Culms slender, 



Figure 359. — Distribution of 

 Uniola latifolia. 



prominently winged. 



4. Uniola ornithorhyncha 



30 to 50 cm tall, loosely tufted with short rhizomes; sheaths pubes- 

 cent on the collar; blades flat, thin, mostly less than 15 cm long, 3 to 

 6 mm wide; panicle narrow, 3 to 9 cm long, the short approximate 

 branches with 1 to 3 nearly sessile spikelets or the lower somewhat 



Figure 360.— Uniola nitida. Plant, X 1; floret, X 5. (Curtiss 3521, Fla.) 



distant with 4 to 6 spikelets, pubescent in the axils; spikelets very 

 flat, with 3 or 4 widely spreading fertile florets, the 2 or 3 lower lemmas 

 empty, appressed; fertile lemmas about 8 mm long, narrow, gradually 

 acuminate, striate-nerved ; palea as long as or longer than the lemma, 

 acuminate, 2-toothed, strongly bowed out below, the keels rather 

 narrowly winged. % — Low woods or hummocks in swamps, Ala- 

 bama to Louisiana. 



