209 
25. C. serrulatus, Watson. Placer Co., Cal., G. R. Vasey ; 
Alta, Cal., Pringle ; Sacramento, M. E. Jones, Flor. Cal., 3530. 
26. C. reflexus, Vahl. (C. rufescens, Torr. and Hook.) Texas, 
(Drummond; E. Hall, No. 679, in part; Wright; Nealley.) 
Specimens recently received from Mr. Nealley show that the 
scales are not always red, and that the spikelets may be as many 
as 30-flowered. 
27. C. cyrtolepis, Torr. and. Hook. Texas (Drummond, 
Wright, Mex. Bound. Survey, No. 1520, E. Hall, 678 in. part, 
Buckley, Reverchon); Camp Grant, Arizona, (Rothrock, Exp. 
and Surv. W. of rooth Merid., 390); Indian Terr., (Palmer 351.) 
Var. DENTICARINATUS. (C. rufescens, var. denticariuatus, 
Britton in Bull. Torr. Bot. Club, xi., p. 85.) After a re-examin- 
ation of Mr, Buckley’s specimens from the valley of the lower 
Rio Grande, I am convinced that they belong rather to this 
species than to C. rufescens. 
28. C. acuminatus, Torr. and Hook. Illinois and Tennes- 
see to Louisiana, Kansas and Arizona; also collected by Howell 
(No. 567) along the Columbia River in Oregon, and by J. W. 
Congdon in Tulare Co., Cal. A form of this species collected by 
E. Hall at Hempstead, Texas (PI. Tex., 679), has dense heads of 
many spikelets. 
Section 5. Haspani, Kunth. 
29. C. Haspan, L. Virginia, North Carolina (Curtis, Can- 
by), to Florida (Curtiss, N. A. Plants, No. 3041), and westward 
to Texas (E. Hall, No. 683); also occurring in Mexico, the West 
Indies, South America, Africa, Asia and Australia. 
30. C. dentatus, Torrey. Cumberland Co., Maine (J. Blake), 
Rhode Island and northern New York (Leggett), to South Caro- 
lina, mainly near the Atlantic coast, but extending westward to 
West Virginia (Mertz.) 
31. C. Lecontet, Torrey. Florida (Curtiss, N. A. Plants, 
No. 3045) to Louisiana. : 
Section 6. Fusci, Kunth. 
32. C. lateriflorus, Torrey. East of Santa Cruz, Sonora, 
(C. Wright, No. 1950.) Not since collected. The species.is 
nearly allied to C. difformis, L., of the tropical regions of the — 
Old World, and may be the same, : 
