IOWA ACADEMY OF SCIENCES. 
135 
Carex asa-grayi Bailey. Gray’s Sedge. Wet soil. Infre- 
quent. June 6, 1898. 
Carex cristatella Britton. Crested Sedge. Meadows. June 
6, 1898. 
Carex ietanica Schk. Wood’s Sedge. Meadows. May 19, 
1898. 
ARACE^. 
Acorus calamus L. Sweet Flag, Swampy ground. July 24, 
1899. 
LEMNACE^. 
Lemna trisulca L. Ivy -leaved or Star Duckweed. Ponds. 
Infrequent. 
PONTEDERIACE^. 
Pontederia cor data h, Pickeral Weed. Swampy ground and 
egdes of pond. Infrequent. July 24, 1899. 
SMILACE^. 
8milax ecirrhata (Engelm.) S. Wats. Upright Smilax. 
Woods. Infrequent. May 23, 1898. 
LILIACE^, 
Quamasia hyacinthiana (Raf.) Britton. Wild Hyacinth. 
Once reported to this academy as Zygadenus elegans Pursh. 
Frequent locally. May 23, 1898. 
ORCHIDACE^. 
Cypriyedium candidum Willd. Small White Lady’s Slipper. 
A bunch of four found on a seepy bluff. May 28, 1904. 
Leptorchis liliifolia (L.) Kuntze. Large Twayblade. Woods. 
Rare. July 21, 1900. 
SALICACE^. 
Salix Jluviatilis Nutt. Sandbar Willow. Along streams. 
