Examination of specimens of vascular plants from various herbaria, as well
as field collections, have revealed 70 taxa not previously reported for Ohi
o, or previously reported without documentation. This paper documents these
new taxa, 44% of which are escapes of woody landscape plants. The specimen
s cited represent 55 genera in 30 families. Of these, the following genera
are first reports for the state: Achyranthes, Albizia, Carthamus, Cercidiph
yllum, Cotoneaster, Dactyloctenium, Fontanesia, Gaillardia, Guizotia, Gypso
phila, Stenosiphon, Tripsacum, and Zinnia, Cercidiphyllaceae is the only fa
mily reported as new for the state. Some taxa cited in this paper represent
first reports as escapes for North America These are Cotoneaster divaricat
us (Rosaceae), Fontanesia fortunei (Oleaceae), Magnolia x soulangeana (Magn
oliaceae), Magnolia stellata (Magnoliaceae), Viburnum buddleifolium (Caprif
oliaceae), and Viburnum x rhytidiphylloides (Caprifoliaceae).