210 



33- C Iria, 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,\^. In ballast sand, Camden (Parker); Revere 

 Beach, Mass. (H. A. Young, in Gray Herbarium.) Adventive. 



Section 7. Glomerati, Clarke. 



35. C. cepJialantJius, Torn and Hook. Texas (Drummond, 

 3d Coll., No. 445) ; Louisiana (Carpenter, Langlois.) 



'^G. 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 lOOth 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. articiilattis, 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. 



Van coiiglomeratiis, 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 l)y tuberiferous stolons. 



39. C rotuiidiis, 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 esculentjis, L. {C. pJiymatodes, Muhl. ; C rcpens, 



