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Small Floating Bladderwort Utricularia radiata Small |
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Family: Bladderwort Family (Lentibulariaceae)
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 the 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: G4
A Global Rarity Rank of G4 means: This species is apparently secure globally (typically with more than 100+ populations), though it may be quite rare in parts of its range, especially at the periphery. Did you know? This is one of the few plants in the state where there are fewer historical records than existing populations. Once targeted surveys got underway in the 1980s many new populations were found. The genus name means little bladder while the species name comes from the floating leaves which radiate in all directions (Fernald, 1970). |
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| State Ranking Justification | [-] |
There are 23 existing populations and 13 are ranked good to excellent in quality. The remaining populations contain fewer than 50 plants each. There are no additional historical records which have not been found or surveyed. This is one of the few rare plants that have more current records than historical records.
| Short-term Trends | [-] |
Many populations have been rechecked at least once and populations seem stable.
| Long-term Trends | [-] |
This is one of the few species that has more current populations than historical records and seems to be expanding its numbers in the state. Climate change may make more water bodies available for colonization.
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Home | Advanced Search | About Us Animal Guides | Plant Guides | Community Guides © 2004-2012 New York Natural Heritage Program, a partnership between the New York State Department of Environmental Conservation and the State University of New York College of Environmental Science and Forestry Please cite this page as:
New York Natural Heritage Program. 2013. Online Conservation Guide for Utricularia radiata. Available from: http://www.acris.nynhp.org/guide.php?id=9180. Accessed May 19th, 2013. 
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