New York Natural Heritage Program
Houghton's Sedge
Carex houghtoniana Torr. ex Dewey
Monocots
Carex houghtoniana Troy Weldy
Family: Sedge Family (Cyperaceae)

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 specific epithet is named after Douglass Houghton, 1809-1845 who discovered this species on a Friday the 13th in 1832 at Lake Itasca, near the source of the Mississippi River (Voss 1972, Fernald 1970).

State Ranking Justification [-]
There are ten known populations and approximately twenty historical locations. This plant is found within the dunes of the Great Lakes, military training installations, old sand pits, gravel mines, and other areas of exposed sandy or rocky soils. It may be overlooked since it often occurs in disturbed areas (i.e. disturbance that exposes bare mineral soils). As is the case with many disturbance-loving species, this sedge is able to seed bank for long periods of time allowing it to appear for a short time after a disturbance (e.g. fire or soil scrape) and then disappearing again until the next disturbance. This makes survey work somewhat more challenging. Fortunately, this is a relatively easy sedge to identify. To ensure its long-term existance at any site, active management strategies that replicate natural disturbance may be needed.

Short-term Trends [-]

Long-term Trends [-]