A further study of the flora of this restricted exposure during the third and fourth weeks of last June offered certain suggestions upon geographical distribution which are here briefly presented.
Proceedings of the Iowa Academy of Sciences
©1897 Iowa Academy of Science, Inc.
"The Flora of the Sioux Quartzite in Iowa. II.,"
Proceedings of the Iowa Academy of Science, 5(1), 28-31.
Available at: https://scholarworks.uni.edu/pias/vol5/iss1/7