1609½a. Datura metel L. Entire-leaf Thorn-apple. Escaped. Painesville, Lake Co. Otto Hacker.
1611b. Kickxia spuria (L.) Dumort. (Elatinoides spuria Wetzst.) Painesville, Lake Co. Otto Hacker.
1690a. Diodia teres Walt. Rough Button-weed. Painesville, Lake Co. Otto Hacker.
1702a. Asperula hexaphylla All. Asperula. Escaped. Painesville, Lake Co. Otto Hacker.
1712a. Viburnum lantana L. Wayfaring Tree. Escaped. Painesville, Lake Co. Otto Hacker.
1732a. Valeriana officinalis L. Garden Valerian. Escaped. Painesville, Lake Co. Otto Hacker.
1756a. Arnoseris minima (L.) Dumort. Lamb Succory. Painesville, Lake Co. Otto Hacker.
1756b. Hypochaeris glabra L. Smooth Cat’s-ear. Painesville, Lake Co. Otto Hacker.
1766c. Lactuca virosa L. Strong-scented Lettuce. Confused with L. scariola according to Britton, being the commoner of the two species. (A. D. Selby, Meeting Ohio Academy of Science, November, 1901.)
1775a. Hieracium pilosella L. Mouse-ear Hawkweed. Painesville, Lake Co. Otto Hacker.