Bush - 1444 - United States
Dryopteris marginalis
Hopkins - 3236 - United States
Irick - s.n. - United States
Jesiolowski - 14 - United States
Palmer - 12639 - United States
Palmer - 29036 - United States
Palmer - 41990 - United States
Pass - 95 - United States
Sanders - 219 - United States
Smith - 2811 - United States
Summers - 7377 - United States
Yatskievych - 14-26 - United States
Yatskievych - 15-043 - United States