Fraxinus , English name ash, is a genus of flowering plants in the olive and lilac family, Oleaceae.
 It contains 45–65 species of usually medium to large trees, mostly deciduous though a few subtropical species are evergreen.
 The genus is widespread across much of Europe, Asia and North America.
Fraxinus americana, the white ash or American ash, is a species of "ash tree" native to eastern and central North America.
 It is found in mesophytic hardwood forests from Nova Scotia west to Minnesota, south to northern Florida, and southwest to eastern Texas.
 Isolated populations have also been found in western Texas, Wyoming and Colorado, and the species is reportedly naturalized in Hawaii.
Onoclea is a genus of plants in the Onocleaceae family, native to moist habitats in eastern Asia and eastern North America.
 They are deciduous ferns with sterile fronds arising from creeping rhizomes in spring, dying down at first frost.
 Fertile fronds appear in late summer.
 Depending on the authority, the genus contains one to five species.

Question: Can Fraxinus and Onoclea both be found in North America?
Answer: yes