112 
IOWA ACADEMY OP SCIENCES. 
CAPPARIDACE^. 
Gleome integrifolia Torr. & Gray. Only indigenous to western 
Iowa, has become a common weed in Council Bluffs, Missouri 
Valley, Sioux City and Onawa. 
CARYOPHYLLACE^. 
Saponaria vaccaria L. Little Rock (C. R. Ball). A weed 
of wheat fields. 
Silene cucubalus Wibel. Ames. 
Silene noctiflora L. Ames, 1896. 
Lychnis vespertina Sibeth. Ames, 1896, R. Combs, C. R. 
Ball, Geo. Carver. Red Oak, 1896, C. G. Patten. 
L. githago Lam. Rock Valley, 1896 (J. P. Jensen and W. 
NewelJ). Little Rock (C. R. Ball). Ames (Hitchcock). This 
weed has shifted with wheat culture. I have never seen a 
specimen growing in central Iowa. 
^ MALVACE^. 
Malva rotundifolia L. Abundant in some parts of Iowa. It 
is frequent in central Iowa. Common in western Iowa in cities 
and along the Missouri river and in eastern Iowa along the 
Mississippi river. Little Rock, 1893 (C. R. Ball). 
Hibiscus trionum L. Ames, 1890-1896. Has scarcely escaped 
to fields, usually about flower gardens. Muscatine (F. Rep- 
pert). LeClaire in fields (P. H. Rolfs). 
Trifolium arvense L. Collected by Professor Bessey in 1871, 
has not been found since. 
T. agrarium L. Reported by Hitchcock from Ames in 1886, 
has not been found since. 
T. procumbens L. Ames, 1882 (Hitchcock). Occurred in 
Ames in 1886. Iowa city 1884 (Hitchcock). It is now fre- 
quently collected every spring. 
Melilotus officinalis Willd. As yet is not common in central 
Iowa though abundant in Sioux City, 1895, and Council Bluffs, 
1895. Also occurs in Muscatine, 1891 (P. Reppert). Iowa City, 
1889 (A. S. Hitchcock). Dakota City, 1896 (L. H. Pammel). 
M. alba Lam. Iowa City, 1889 (A. S. Hitchcock). Ames, 
frequent, 1890 (J. P. Rolfs). (P. C. Stewart) 1891. Abundant 
at Moingona, 1895. Boone, 1895. Council Bluffs, 1895. Sioux 
City, 1895, (L. H. Pammel). Iowa City, 1887 (A. S. Hitchcock). 
Muscatine, 1891 (P. Reppert). 
