MANUAL OF THE GRASSES OF THE UNITED STATES 



curved; sessile spikelet 4 to 5 mm. 

 long, the first glume pitted along the 

 nerves. % — Pine woods and 

 prairies, Coastal Plain, North Caro- 

 lina to Florida and Texas, north to 

 Missouri and Oklahoma. 



3. Manisuris tessellata (Steud.) 

 Scribn. (Fig. 1190.) Culms 80 to 120 

 cm. tall, rather stout, branching; 

 sheaths, especially the basal ones, 

 compressed-keeled; blades elongate, 

 flat, mostly 5 to 8 mm. wide; raceme 

 5 to 12 cm. long; sessile spikelets 

 4 to 5 mm. long; first glume tessel- 

 lated with rectangular depressions, 

 the keels narrowly winged at the 

 apex. 91 — Moist pine woods, 

 Coastal Plain, Florida to Louisiana. 



4. Manisuris rugosa (Nutt.) Kunt- 

 ze. (Fig. 1191.) Culms mostly rather 

 stout, 70 to 120 cm. tall, freely 

 branching; sheaths compressed- 

 keeled; blades commonly folded, 3 

 to 8 mm. wide; flowering branches 

 often numerous, the racemes 4 to 8 

 cm. long, partly included in brownish 

 sheaths; rachis joint and pedicel con- 

 tracted in the middle; sessile spikelet 

 3.5 to 5 mm. long, the first glume 

 strongly and irregularly transversely 

 ridged, the keels narrowly winged 

 toward the summit. % — Wet pine 

 woods, Coastal Plain, southern New 

 Jersey to Florida, Arkansas, and 

 Texas. 



5. Manisuris tuberculosa Nash. 

 (Fig. 1192.) Differing from M. rugosa 

 chiefly in the straight rachis joints, 

 not contracted in the middle, and in 

 the smooth to obscurely ridged or 

 tuberculate first glume of the sessile 

 spikelet, varying in a single raceme. 

 % — Moist ground along lakes, 

 central peninsular Florida. Apparent- 

 ly rare. 



Eremochloa ophiuroides (Munro) 

 Hack. Centipede grass. Low peren- 

 nial, creeping by thick short-noded 

 leafy stolons; racemes spikelike, 

 smooth, subcylindric, terminal and 

 axillary on slender peduncles, 2 to 

 6 cm. long; rachis flat, not thickened 

 as in Manisuris, the first glume of 



787 



Figure 1190. — Manisuris tessellata, X 1. (Tracy and 

 Ball 1, Miss.) 



sessile spikelet winged at summit. % 

 — Southeastern Asia; valuable as a 

 lawn grass from South Carolina to 

 Florida, and the Gulf States. It is 

 commonly used in northern Florida, 

 replacing to a large extent carpet 

 grass and St. Augustine grass. It is 

 easily established and quickly forms 

 a dense turf. 



Figure 1191. — Manisuris 

 rugosa, X 1. (Curtiss 

 3622, Fla.) 



Figure 1192. — Manis- 

 uris tuberculosa, X 1« 

 (Nash 1074, Fla.) 



