129 
1110. S. atro virens, Muhl. 
Frequent in wet prairies and bogs. June — July. (B.) 
ERIOPHORUM, L. Cotton-Grass. 
1111. E. lineatum, Benth. & Hook. 
Scirpus lineatns, Mickx. 
Low prairies; frequent. June — July. (B.) 
South Chicago, Hill. Calumet Region and east; infrequent. 
1112. E. cyperinum, L. Wool-Grass or Rush. 
Scirpus eriophorum , Michx. 
Wet places; infrequent or rare. (B.) 
West of Berry Lake, Ind., frequent in 1886. 
Very variable. Possibly variety laxum, Gray, may be found within 
our limits. 
1113. E. virginicum, L. 
Sloughs and swamps, chiefly from the Calumet Region, east; com- 
mon. July — August. 
1114. E. polystachyon, L. 
Wet prairies and bogs ; common, especially in the southern portions 
of our district. May 20th — July 15th. 
1115. E. polystachyon, L., var. latifolium, Gray. 
Found with the type. (B. P.) 
1116. E. graeile, Koch. 
Sheffield, Ind.; rare. Miller’s and Pine Station, Ind. May — 
July 10th. 
South Chicago, University of Chicago Herbarium. (B.) 
HEMXOARPHA, Nees. 
1117. H. subsquarrosa, Nees. 
o 7 Includes var. drammondii, in Manual, 5th Ed. 
Damp sandy soil; rare. July. (B.) 
Miller’s, Ind., 1880, Hill! This form is the variety drnmmondii of 
the 5th Edition of the Manual. Also found at Be ry Lake, Ind., 
1890. 
The nearest point at which the type has been found is Laporte, Ind. 
RHYNCHOSPORA, Vahl. Beak-Rush. 
1118. R. cymosa, Nutt. 
Not common. Miller’s, Ind., August 8th, 1876. Tolleston, Ind. 
<?l 7 Prof. Hill first detected this plant at Kankakee, Ills., in 1870, and 
the second time at Miller’s, Ind. It grows in some localities with 
R. glomerata, Vahl., but is much less common. (B.) 
