MANUAL OF THE GRASSES OF THE UNITED STATES 



745 



southern New Jersey to southern 

 Illinois, southern Missouri, and Okla- 

 homa, south to Florida and Texas. 

 Erianthus alopectjroides var. hir- 

 sutus Nash. Sheaths and lower sur- 

 face of the blades appressed-hirsute. 

 % — North Carolina and Florida. 

 4. Erianthus brevibarbis Michx. 

 (Fig. 1132.) Culms stout, nearly 2 

 m. tall, with 9 or 10 nodes; glabrous; 

 sheaths glabrous or sparingly pubes- 

 cent at the summit; blades scabrous 

 on the upper surface, pilose at the 

 base, 1 to 1.5 cm. wide, the upper 

 not reduced; panicle 35 cm. long, 

 tawny brown, not conspicuously wool- 

 ly; spikelets 6 to 7 mm. long; glumes 



Figure 1132. — Erianthus brevibarbis. Pair of spikelets 

 with pedicel and rachis joint, X 5. (Demaree 8228, 

 Ark.) 



Figure 1133. — Erianthus coarctatus. Pair of spikelets 

 with pedicel and rachis joint, X 5. (Type col- 

 lection.) 



acuminate, glabrous or with a few 

 long hairs on the inflexed margins, 

 the spreading basal hairs about two- 

 thirds as long as the spikelet; awn 

 terete, straight or subflexuous, 1.5 

 to 1.6 cm. long; rachis joint and 

 pedicel sparsely long-pilose. % — 

 Dry hills, southern Illinois (type) 

 and Arkansas (Pulaski County) ; rare. 

 5. Erianthus coarctatus Fernald. 

 (Fig. 1133.) Culms relatively slender, 

 75 to 150 cm. tall, subcompressed, 

 the nodes bearded, appressed-pubes- 



