102 Cheney and True—Flora of Madison and Vicinity. 
550. H. lacera , R. Br. 
A few specimens collected south of Lake Wingra. 
Rare. 
551. H. psycodes, Bray. 
Growing in low thicket southeast of Lake Win¬ 
gra. Rare. 
Cypripedium, L. Lady’s slipper. Moccasin-flower. 
552. C. candidum , Muhl. Small white lady’s slipper. 
Very abundant in limited areas in the wild mea¬ 
dow lands about the lakes. Especially south of 
Lakes Monona and Wingra. 
553. **(7. parviflorum , Salisb. Smaller yellow lady’s slipper. 
Three specimens reported from marsh land south 
of Lake Wingra. 
554. **C. pubescens , Willd. Larger yellow lady’s slipper. 
In all the rich woodlands of the region. 
555. C. spectabile. Salisb. Showy lady’s slippor. 
A few specimens found in tamarack swamp south¬ 
west of Windsor. Nearly extinct. 
i 
H^modorace^e. (Bloodwort Family.) 
Aletris, L. Colic-root. Star-grass. 
556. *A. farinosa , L. 
A few specimens found growing on little knoll in 
marsh northeast of Mendota. Rare. 
iRiDACEiE. (Iris Family.) 
Iris, Tourn. Flower-de-Luce. 
557. **/. versicolor , Larger blue flag. 
Common in marshes. 
Sisyrinchium, L. Blue-eyed grass. 
558. S. angustifolium , Mill. 
Common on dry sandy soil. 
