Natural Heritage Program List of Rare Plant Species - Rawlings ...

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North Carolina Rank. Natural Heritage Programs, Conservation Data Centers (CDC's), and NatureServe have developed a consistent method for evaluating the relative imperilment of both species and ecological communities. These assessments lead to the designation of a conservation status rank. For plant and animal species these ranks provide an estimate of extinction risk. Conservation rank values have been assigned over the past thirty years by the NC Natural Heritage Program, NatureServe, and a large number of collaborators in government agencies, universities, natural history museums and botanical gardens, and other conservation organizations. The information has been developed primarily to help in guiding conservation and informing environmental planning and management. Conservation status ranks are based on a one to five scale, ranging from critically imperiled (S1) to demonstrably secure (S5). These status assessments are based on the best available information, considering a variety of factors such as abundance, distribution, population trends, and threats. RANK NUMBER OF EXTANT POPULATIONS NORTH CAROLINA RANK DEFINITION S1 1-5 Critically imperiled - Critically imperiled in North Carolina due to extreme rarity or some factor(s) making it especially vulnerable to extirpation (local extinction) from the state. Typically 5 or fewer occurrences or very few remaining individuals (
SU Unknown Unrankable - Currently unrankable in North Carolina due to lack of information or substantially conflicting information about status or trends. More information is needed. SNR Unknown Not Ranked - Rank in NC not yet assessed. SNA N/A Not Applicable - A conservation status rank is not applicable because the element is not a suitable target for conservation for one of the following reasons: - Hybrid - an interspecific hybrid without conservation value; - Exotic Origin - not native to North Carolina; - Accidental/nonregular - outside usual range and not regularly found in North Carolina; - Not confidently present - never documented as present in North Carolina; - Synonym - the taxon is not recognized by the NC Natural Heritage Program. -? – Uncertain - Denotes inexact or uncertain numeric rank. A rank involving two numbers indicates a range of uncertainty about the conservation rank in North Carolina. For example, a S2S3 rank indicates that the species may be a S2 or a S3, but existing data do not allow that determination to be made. Global Rank. Similar to North Carolina ranks, global ranks are assigned by a consensus of scientific experts, Natural Heritage Programs, CDC's, NatureServe, and TNC. They apply to the status of a species throughout its range. This system is widely used by other agencies and organizations, as the best available scientific and objective assessment of a species' rarity throughout its range. RANK NUMBER OF EXTANT POPULATIONS GLOBAL RANK DEFINITION G1 1-5 Critically imperiled - Critically imperiled globally because of extreme rarity or because of some factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (
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Scientific Name Common Name Status
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Watch Category 2 (W2 - rare, but ta
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Watch Category 6 ( regionally rare)
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PLANT TAXA ENDEMIC TO NORTH CAROLIN
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Chamaecrista nictitans var aspera -
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Solidago hispida - M (calcareous wo
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Paspalum vaginatum W3 SR-P S1S2 G5
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NAME CHANGES SINCE 2004 RARE LIST P
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Area of apparently suitable habitat
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Abies fraseri ..................4,
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Corallorhiza maculata ............8
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Ilex longipes ....................3
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Porpidia macrocarpa ............111
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Trientalis borealis ...............
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Natural Heritage Program List of Rare Plant Species - Rawlings ...

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