New York Natural Heritage Program
Blunt-lobe Grape Fern
Botrychium oneidense (Gilbert) House
Botrychium oneidense Kenneth Hull
Family: adder's-tongue family (Ophioglossaceae)

State Protection: Threatened
listed species are those with: 1) 6 to fewer than 20 extant sites, or 2) 1,000 to fewer than 3,000 individuals, or 3) restricted to not less than 4 or more than 7 U.S.G.S. 7 ? minute topographical maps, or 4) listed as threatened by U.S. Department of the Interior.

Federal Protection: Not Listed

State Rarity Rank: S2
A State Rarity Rank of S2 means: This plant is threatened/imperiled in New York because of rarity (typically 6-20 populations or few remaining individuals) or is vulnerable to extirpation from New York due to biological factors.

Global Rarity Rank: G4
A Global Rarity Rank of G4 means: This species is apparently secure globally (typically with more than 100+ populations), though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
The species is named for Oneida County, New York. The specimen used to describe this species was collected on the Mohawk Flats near Utica. During dry years this plant may not produce leaves at all but remain as an underground stem until wet weather returns.

State Ranking Justification [-]
There are eight existing populations, most of them of small size, but there are over 30 occurrences that have not been field checked. The difficulty of finding this small plant makes it more difficult to determine its true status.

Short-term Trends [-]

Long-term Trends [-]