133 
1143. C. aquatilis, Wahl. 
Desplaines river, near Desplaines; rare, 1889. Lake Calumet, near 
the southern, end; rare, 1886. Calumet river, near South Chicago; 
infrequent. June. (B.) 
Sterile spikes rarely four. A form with long and narrow leaves, 
with the fertile spikes quite short, 1J to 2 inches long, is occa- 
sionally met with. Plants 2 to 5 feet high. 
1144. C. erimta, Lam. 
Banks of streams and wet places ; frequent. (B.) 
1145. C. graeillima, Schwein. 
Sloughs; rare. May — June. (B. P.) 
• Pine Station and Miller’s, Ind. 
A form with scales obtuse or with a short point was found in wet 
places in woods west of Clarke, Ind., 1889, Hill . 
1146. C. grisea, Wahl. 
ef ., 1 Moist places; infrequent. 
South Park. Pullman. 
Murray. (B. P.) 
Riverside, Brennan. Desplaines, C. P. 
1147. C. granularis, Muhl. 
Wet places north of Lake Calumet; infrequent. May. ] 
At Clarke, Ind., in moist or even dryish soil, Hill. (B.J) c 
ii 
1148. C. erawei, Dew. 
a'-'; Sloughs and wet places, especially south ; frequent. June. 
1149. C. flava, L., var. viridula, Bailey. 
C. cederi , in Manual, 5th Ed. 
Lake shore from South Chicago, south to Pine Station, Ind. ; fre- 
quent. May — June. (B. P.) 
Bluffs near Evanston, Miss Frances Towle. Rose Hill, Johnson. 
Prof. Hill reports the following: I find this abundant in wet sands 
from Englewood east. It delights particularly in railway excava- 
tions when not too wet, growing in extensive patches and thickly 
covering the ground. 
1150. Co conoidea, Schk. 
- Moist prairies; infrequent, especially southward. May 25th — June. 
(B.) 
1151. C, olig’ocarpa, Schk. 
Woods; rare. June. 
Forest Hill, also Hobart, Ind., Hill! (B.) 
Bailey remarks: “I find that in general, botanists have not a clear 
conception of this species. Distinguished from C. grisea, var. 
