210 
33... C. Tria, L. Santee Canal, South Carolina (Ravenel ; 
Curtiss, N. A. Plants, No. 3043.) According to Dr. Chapman 
it was probably introduced from eastern Asia, where, as elsewhere 
in warm-temperate countries, it is a noxious weed in rice fields. 
34. C. fuscus,L. In ballast sand, Camden (Parker); Revere 
Beach, Mass. (H. A. Young, in Gray Herbarium.) Adventive. 
Section 7. Glomerati, Clarke. 
35. C. cephalanthus, Torr. and Hook. Texas (Drummond, 
3d Coll., No. 445); Louisiana (Carpenter, Langlois.) 
.36. C. spectabilis, Schreb. Texas (Drummond, in Calcutta 
Herbarium, fide Clarke, 1. c., p- 142.) Arizona, (Rothrock, 600 
and 601, in Expl. and Surveys W. of 1ooth Meridian.) (See No. 
14 of this List.) 
37. C. distans, L. Eastern North Carolina (Gerald Mc- 
Carthy, 1885.) The species was recorded from the same region 
by Pursh (Flor. Amer., Sept., i, p. 53) and its rediscovery by 
Mr. McCarthy confirms Pursh’s statement that it grows ‘“‘in wet 
woods, Carolina and Georgia.” It is widely distributed in trop- 
‘ical countries. 
Section 8. Corymbosi, Kunth. 
* Culm jointed, leafless. - 
38. C. articulatus, L. South Carolina and Florida (Curtiss, 
N. A. Plants, No. 3024) to Texas along the Gulf Coast (E. Hall, 
No. 703.) In all tropical regions. : 
Var. conglomeratus, Britton. Valley of the lower Rio Grande 
(Buckley.) 
A form of this species with the spikelets greatly elongated 
has been collected by Mr. Nealley in Texas. 
** Culms leafy. 
t Perennial by tuberiferous stolons. 
 39.. C. rotundus, L. North Carolina to Florida (Curtiss, N. 
_ A. Plants, No. 3055) and Texas (E. Hall, 684); also in ballast 
grounds at Jersey City (Brown), Philadelphia and Camden 
(Parker), and at Port Eads, La., (Langlois) ; throughout the 
warmer regions of the globe. For synonomy see Clarke, 1. c., 
p. 162. 
_ 40. C. esculentus, L. (C. phymatodes, Muhl.; C. repens, 
