230 
Cyperus flavescens L. 
var. poaeformis (Pursh) Fern. [M: C. flavescens] (Voss, 
1972), p. 259 
*C. flavicomus Michaux [C. albomarginatus (C. Martius & 
Schrader ex Nees) Steudel] (Dunn and Knauer, 1975; 
985) 
C. iria L., p. 26 
C. lancastriensis Porter, p. 267 
C. lupulinus (Sprengel) Marcks [S, M: C. filiculmis M. Vahl] 
(Marcks, 1974), p. 268 
ssp. lupulinus 
Ssp. macilentus (Fern.) Marcks [S, M: C. filiculmis var. 
macilentus Fern.] (Marcks, 1974) 
*C. luzulae (L.) Retz. (Denton, 1978) 
- x mesochorus Geise, see named hybrids 
C. odoratus L., Pp. 263 [S, M: incl. C. engelmannii Steudel, C. 
erruginescens Boeckeler; G: incl. C. engelmannii| 
(Marcks, 1974; Tucker, 1984a) 
C. plukenetii Fern., Pp. 268 | 
C. polystachyos Rottb. [S: incl. var texensis (Torrey) Fern.] | 
(Tucker, 1983), p. 260 
C. pseudovegetus Steudel [S: C. virens Michaux] (Denton, 
78), p. 262 
var. pseudo s 
C. refractus Engelm. ex Steudel, p. 267 
C. retrofractus (L.) Torrey [S: ¢. dipsaciformis Fern.] (Carter, 
i , Pp. 267 
1 
¢C. rotundus L., nut 8Tass, COCO grass, p. 264 
C. schweinitzii Torrey, p. 268 
C. setigerus Torrey & Hook., p. 264 
C. strigosus L. [S: incl. var. robustior Britton] (O'Neill, 1942; 
Mohlenbrock, 1976), p. 266 
DULICHIUM, three-way sedge 
Dulichium arundinaceum (L.) Britton, three-way sedge, p. 273 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
