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Cloud Sedge Carex haydenii Dewey |
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Family: Sedge Family (Cyperaceae)
State Protection: Endangered Species 
This level of state protection means: 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 ½ 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? Although Carex haydenii is often mistaken for Carex stricta or vice versa, the two may not be very closely related (Standely et al. 2002). The specific epithet haydenii is named in honor of Ferdinand Vandeveer Hayden, 1829-1887, who discovered this species (Fernald 1970). |
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| State Ranking Justification |
| There are five known populations and at least eight historical sites. In New York, it is a plant of open habitats of bogs/poor fens, moist meadows, and seasonally wet soils. It is easily confused with Carex stricta and possibly overlooked because of its similarity with this very common tussock sedge. Range-wide there have been observations that this plant is decreasing due to habitat conversion and land use changes. While there have not been enough surveys to support this downward trend within New York, there is no evidence to suggest the same decline is not happening. |
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Home | Advanced Search | About Us Animal Guides | Plant Guides | Community Guides © 2004-2005 New York Natural Heritage Program, a partnership between the New York State Department of Environmental Conservation and The Nature Conservancy Please cite this page as:
New York Natural Heritage Program. 2009. Online Conservation Guide for Carex haydenii. Available from: http://acris.nynhp.org/guide.php?id=9488. Accessed September 6th, 2010. 
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