Family: Sedge Family (Cyperaceae)
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The specific epithet typhina refers to cat-tails (Fernald 1970) perhaps due to the resemblance of the spikes of Carex typhina to the spikes of cat-tails (the plant not Whiskers).
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There are six known populations but only one has more than a hundred plants. Twenty-two historical locations need additional surveys. One may jump to the conclusion that this sedge is overlooked, however, it appears to be rare throughout the northeastern U.S. and adjacent Canada. This plant is typically found as small populations within wet woods and may be subject to hydrological changes, invasive species, or land-use changes.
Most of the populations that have been observed within the past 20 years have only been surveyed once so the short term trends are unknown.
There are at least 9 populations (mostly from Queens, Bronx, and Kings Counties) that are believed to be extirpated mostly due to urban development. An additional 10 populations have not been seen in over 50 years but these populations have not been looked for or the location information is not precise so it is unclear if these populations are still extant. There are 8 extant populations most of which have only recently been found. As with many Carex species these populations were probably overlooked in the past. Over the long term Carex typhina appears to be declining in New York.