134 
IOWA ACADEMY OP SCIENCES. 
not occur on the east slopes of the mounds, perhaps 
because they are more or less wooded about Council 
Bluffs and Missouri Valley. Sioux City (B. W.), Hitch- 
cock Bot. Gazette, XIV, p. 128. 
Polygonatum giganteum Dietr. 
Sioux City (B. W., L. H. P. observations). Deep rich 
woods. 
Smilacina stellata Desf. 
Sioux City (B. W.). 
Uviclaria grandiflora Smith. 
Sioux City (B. W.). 
Erythronium albidum Nutt. 
Sioux City (B. W.). 
Lilium PliiladeljpMcum L. 
Little Rock (Herb., C. R. Ball). 
L. Canadense L. 
Sioux City (B. W.). 
Trillium nivale Riddell. 
Cherokee (B. W.). 
Zygadenus elegans Pursh. 
Little Rock (Herb., C. R. Ball). 
COMMELINACE^. 
Tradescantia Virginica L. 
Sioux City (B. W.). 
JUNCACE^. 
Juncus tenuis Willd. 
Sioux City (B. W., L. H. P. observations). 
J. nodosus. 
Sioux City (B. W.). 
TYPHACE^. 
TypJia latifolia L. 
Sioux City (B. W.). 
Sparganium eurycarpum Engelm. 
ARACE^. 
Dickinson Co. (Hitchcock); Hull (W. Newell). 
Arisaema tripyldlum Torr. 
Sioux City (B. W.). 
ALISMACE^. 
Alisma plantago L. 
Sioux City (B. W.). 
Echinodorus rostratus Nutt. 
Sioux City, Big Sioux river (L. H. P.). 
