2b. A cultivated annual 

 53. Echinochloa crusgalli var. frumcntacca — Japanese Millet 



Leaves rolled in bud-shoot; sheath round to somewhat flattened, 

 smooth, split with overlapping hyaline margins; auricles absent; collar 

 narrow; ligule absent; blade to 30 mm. wide, rough above and below 

 at least near tip, margins very rough and hyaline. Inflorescence — a com- 

 pact panicle with short, densely flowered, spike-like branches. Occa- 

 sionally cultivated as a forage grass. 



GROUP 5 



la. Plant with creeping rhizomes or stolons 2 



lb. Plant without creeping rhizomes or stolons 4 



2a. Blade rolled and bristle-like 



54. Spartina patens — Salt-meadow Cordgrass 



Leaves rolled in bud-shoot ; sheath round, smooth, split with overlap- 

 ping hyaline margins; auricles absent; collar narrow to broad; ligule 

 a fringe of hairs, .4 to 1 mm. long; blade 2 to 4 mm. wide, bristle-like, 

 smooth to rough above, smooth below, margins smoth to rough. In- 

 florescence— 2 to several comb-like spikes forming an appressed to open 

 panicle. Maine south. Brackish marshes and beach sand along coast. 

 2b. Blade not rolled and bristle-like 3 



3a. Plant with creeping rhizomes and strong flat stolons 



55. Cynodon dactylon — Bermuda Grass 



Leaves rolled in bud-shoot; sheath round to distinctly flattened, most- 

 ly smooth but may be short hairy or have a tuft of hairs at throat, split 

 with margins hyaline and mostly overlapping; auricles absent; collar 

 narrow to broad, hairy at least on margins; ligule a fringe of hairs, mostly 

 .2 to .4 mm. long (may be longer) ; blade 2 to 5 mm. wide, smooth to 

 rough or short hairy above but mostly with at least a few hairs near base, 

 smooth to rough or short hairy below, margins rough and hyaline. In- 

 florescence — 4 or 5 digitate spikes. Maryland south. Common in fields 

 and grasslands. 

 3b. Plants with creeping rhizomes but without stolons 



56. Zoysia japonica — Meyer Zoysia 



Leaves rolled in bud-shoot; sheath round to somewhat flattened, 

 smooth but may have a tuft of hairs at throat, split with overlapping 

 hyaline margins; auricles absent; collar mostly broad, hairy at least on 

 margins; ligule a fringe of hairs, to .2 mm. long; blade 2 to 5 mm. wide, 

 smooth or occasionally short hairy above with at least a few long hairs 

 near base, smooth below, margins smooth to rough and occasionally long 

 hairy near base. Inflorescence— short, terminal, spike-like. Maryland 

 and Delaware south. Cultivated for lawns. 



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