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Screw-stem Bartonia paniculata ssp. paniculata |
Dicots |  Printer Friendly Version (PDF) |
Family: Gentian Family (Gentianaceae)
State Protection: Endangered 
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 ? 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: G5T5
A Global Rarity Rank of G5T5 means: Secure globally - Both the species as a whole and the subspecies/variety are common in the world; widespread and abundant (but may be rare in some parts of its range). Did you know? The genus Bartonia was named for the famous Philadelphia botanist Benjamin Smith Barton by fellow Philadelphia botanist Henry Muhlenberg (Fernald 1950). It is one of only two genera that Muhlenberg named. Both botanists died in 1815, seven months apart (Lee 1999). |
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| State Ranking Justification | [-] |
There are five known populations but only two of them have exact numbers of plants and they are small. The remaining populations are assumed to be small. There are 20 historical occurrences.
| Short-term Trends | [-] |
There is not enough information on population size and resurveys to know the short-term trend.
| Long-term Trends | [-] |
There are many historical records and only five known populations, so it seems that the long-term trend is downward. This plant is difficult to find so it may be overlooked in the field and more common than we think. More field work is needed to determine the exact scale of the long-term trend.
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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 Bartonia paniculata ssp. paniculata. Available from: http://acris.nynhp.org/guide.php?id=33761. Accessed May 22nd, 2013. 
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