Botrychium simplex

Botrychium simplex, the little grapefern, is a species of fern in the family Ophioglossaceae that is native to North America. It is a perennial.
Conservation status in the United States.
It is listed as a special concern species in Connecticut and is believed extirpated. It is endangered in Illinois, Indiana, and Ohio. It is listed as endangered and extirpated in Maryland, threatened in Iowa, exploitably vulnerable in New York, special concern in Rhode Island, and sensitive in Washington (state).
Conservation status in Europe.
This species is extremely rare in most European countries. In Ukraine only one place is known.