New York Natural Heritage Program
Great Plains Flatsedge
Cyperus lupulinus ssp. lupulinus
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: S1S2
A State Rarity Rank of S1S2 means: Critically Imperiled or Imperiled in New York - Especially or very vulnerable to disappearing from New York due to rarity or other factors; typically 20 or fewer populations or locations in New York, very few individuals, very restricted range, few remaining acres (or miles of stream), and/or steep declines. More information is needed to assign a single conservation status.

Global Rarity Rank: G5T5?
A Global Rarity Rank of G5T5? means: Secure globally (most likely) - Conservation status of the subspecies/variety is uncertain, but is most likely common in the world; widespread and abundant (but may be rare in some parts of its range). More information is needed to assign a firm conservation status. (The species as a whole is common globally.)

Did you know?
A good way to remember that the scales of this subspecies are more loosely arranged around the fruit than the closely related Cyperus lupulinus ssp. macilentus, which has scales that tightly clasp the fruit, is that the name lupulinus refers to the hop genus Lupulus which has inflated fruits. This subspecies may be undercollected because it very closely resembles the common subspecies macilentus.

State Ranking Justification [-]
There are seven existing populations but most of them are from specimens identified after collections took place so there is no detailed information about their locations or populations. There are 15 historical populations that have not been actively surveyed.

Short-term Trends [-]

Long-term Trends [-]