135 
In wet places. May — June 25th. 
From Sheffield, south to Pine Station, Ind. ; rare. Hinsdale, Du 
Page County; common, Babcock. 
1160. C. aurea, Nutt. 
Banks of streams, sloughs, etc., from Hyde Park southward; fre- 
quent. May 20th — July, often as late as September. 
Moist woods at Niles; rare. Pine Station, Ind.; abundant, Babcock ! 
Sterile spikes with fertile flowers at the apex, Whiting and Pine 
Station, Ind., Hill, 
1161. C. eburnea, Boott. 
^ , Dry sands, Pine, Ind. ; common where found, but apparently limited 
7 / in range, Hill. (B. P.) 
1162. C. pichardsoni, B.Br. 
Dry sands, Pine Station, Ind. ; infrequent. May. (B.) 
Apt to be overlooked, and taken for C. pennsylvanica, Lam. 
1163. C. varia, Muhl. 
C. emmonsii , Dew. 
Sandy woods, Whiting to Miller’s, Ind. ; infrequent. May — June. 
(B.) 
Varies somewhat. Bracts longer than the culm, Whiting, Ind., 
June, 1880; without radical peduncle and with green spikes, East 
Chicago, Ind., May, 1886. Generally grows in tufts, sometimes 
very dense, in dry sandy soil, and usually with both kinds of 
spikes, the peduncled one from the base, and the others, 2 to 4, 
crowded near the top of the culm. 
1164. C. pennsylvanica, Lam. 
Dry banks and open woods ; common throughout. 
1165. c. communis, Bailey. 
C. varia , in Manual, 5th Ed. 
Dry open woods in the northern part of the county ; not frequent, 
more frequent southward. (B.) 
1166. C. umbellata, Schk. 
Dry banks; infrequent. May — June. (P.) 
Evanston. Niles. Sheffield, Ind. Pine Station, Ind.; common, 
Babcock ! 
1167. C. pubescens, Muhl. 
Moist banks and open- woods; infrequent. May — June. (B.) 
'i 7 Riverside and Stony Island; rare. Maywood. Evanston, Johnson . 
