132 
1136. C. filiformis, L. 
Sloughs throughout the Calumet Region and south to Miller’s, Ind. ; 
infrequent or rare. May — June. 
Pine Station, Ind., Babcock ! Morgan Park, Hill, 
1137. C. filiformis, L., var. latifolia, Boeckl. 
C. lanuginosa , Michx. 
Wet places; common. May — July. 
1138. C. riparia, W. Curtis. 
Sloughs near Cassella and Miller’s, Ind. ; infrequent. May 25th — 
July 5th. (B.) 
Clarke, Ind. ; sterile spikes usually 3; uppermost usually stalked; 
leaves variable, about 4 inches wide, Hill, 
1139. C. fusca, All. 
C. buxbaumii , Wahl. 
Bogs, Hyde Park, south to Miller’s, Ind. ; common, infrequent else- 
where. May — July 25th. 
Specimens from Clarke, Ind., had the uppermost spike staminate at 
the apex, as well as at the base, May, 1881, Hill. 
1140. C. vulgaris, Fries. 
Banks of the Calumet river, near L. S. & M. S. R. R. bridge. June 
25th, 1887. (B. P.) 
But two specimens of this species, evidently introduced from the East, 
were found. This is the only record of its occurring within our 
limits. Having looked for it repeatedly since 1887, we are con- 
vinced that the two plants were merely waifs, and that it has dis- 
appeared altogether. 
1141. C. strieta, Lam. 
Wet prairies and peat bogs; common, especially southward. May 
15th — June. 
1142. C. Strieta, Lam., var. decora, Bailey. (Bot. Gaz. xiii., ’85.) 
C. aperta y , in Manual, 5th Ed. 
Woods at Riverside; abundant, Babcock. Evanston, Johnson. 
C. aperta, Boott, is a plant of the Pacific Coast; the name being 
founded on specimens collected by Scoules & Douglas in the 
Columbia river. Boott made a variety b, founded on specimens 
from the Eastern United States. This is the C. aperta of Gray’s 
Manual, 5th Edition. 
Prof. Hill reports the following note concerning a specimen collected 
at Kankakee, 111., in 1872: Spikes rather short, (as compared with 
C. aperta), the perigynia covered with minute, transparent dots; 
some of the scales barely as long as the perigynium. 
