New York Natural Heritage Program
Tundra Dwarf Birch
Betula glandulosa Michx.
Family: Birch Family (Betulaceae)

State Protection: Endangered
listed species are those with: 1) 5 or fewer extant sites, or 2) fewer than 1,000 individuals, or 3) restricted to fewer than 4 U.S.G.S. 7 minute topographical maps, or 4) species listed as endangered by U.S. Department of Interior.

Federal Protection: Not Listed

State Rarity Rank: S1
A State Rarity Rank of S1 means: This plant is endangered/critically imperiled in New York because of extreme rarity (typically 5 or fewer populations or very few remaining individuals) or is extremely vulnerable to extirpation from New York due to biological factors.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: This species is demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Did you know?
The scientific epithet glandulosa is in reference to the very dense gland-like structures that occur on the twigs of this species. Unfortunately, in New York, tundra dwarf birch has fewer and less glands on its twigs than in the rest of its range (Furlow and Mitchell 1990). This species has the smallest leaves of any birch in New York.

State Ranking Justification [-]
There are only three known populations, all restricted to the highest summits of the Adirondacks. One population has fewer than than 50 individuals, and two of the populations are only about one mile apart.

Short-term Trends [-]

Long-term Trends [-]