New York Natural Heritage Program
Swamp Lousewort
Pedicularis lanceolata Michx.
Dicots
Pedicularis lanceolata plants Stephen M. Young
Family: Figwort Family (Scrophulariaceae)

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: 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 common name lousewort, applied to several species of Pedicularis, derives from an old belief that these plants, when ingested, were responsible for lice infestations in stock (Pedicularis in Wikipedia, accessed 16 November 2007). Like other species of Pedicularis, swamp lousewort is hemiparasitic. This means it is parasitic on the roots of other plants, and draws nutrients directly from them as well as using chlorophyll.

State Ranking Justification [-]
There are 19 existing populations and about half of these are in good to excellent condition with hundreds of plants each. Many of the small populations are in protected areas. About 15 of the 25 historical records have been extirpated by development around the New York City area. There is a small chance that a few historical records from the Lower Hudson region could be rediscovered.

Short-term Trends [-]

Long-term Trends [-]