New York Natural Heritage Program
Diapensia lapponica L.
Diapensia lapponica on Algonquin Gregory J. Edinger
Family: Diapensia Family (Diapensiaceae)

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 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: G3G5
A Global Rarity Rank of G3G5 means: Vulnerable globally, or Secure -- Conservation status is uncertain, and could range from moderate risk of extinction due to rarity or other factors, to uncommon, to common globally. More information is needed to assign a single conservation status.

Did you know?
All members of the Diapensia family accumulate aluminum. Ash from leaves of Diapensia lapponica was documented to contain between 16-27% aluminum (Rönblom and Anderberg 2002). The only other plant in this family that grows in NY is Flowering Pixiemoss (Pyxidanthera barbulata), also a state rare plant. It grows in a very different habitat, however, in the coastal pine barrens of Long Island. The other variety of Diapensia lapponica, var. obovata, occurs in Alaska. Diapensia flowers are easily knocked off their stems, so care must be taken when studying them.

State Ranking Justification [-]
There are 13 verified populations which all occur within a very restricted range on the high peaks of the Adirondacks. The populations all occur on protected land and are somewhat threatened by recreational activities.

Short-term Trends [-]

Long-term Trends [-]