Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Global Range: Pinckneya occurs from southernmost South Carolina southwestward to the Florida Panhandle (west to Okaloosa County); there is a slightly disjunct grouping in Clay, Putnam, and Marion Counties, Florida. It is also slightly disjunct to Butts County, Georgia. Historically, it occurred in Beaufort and Jasper Counties, South Carolina, at least 45 counties in Georgia, and 15 counties in Florida. Currently it is known from Jasper County, SC, and an undetermined number of counties in GA and SC. There are no proven records for Alabama.

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Ecology

Habitat

Comments: Pinckneya occurs in and at the margins of streamheads in habitats termed streamhead pocosins, bayheads, branch bays, and seepage swamps. It also may occur in adjacent seepage bogs without associated canopy species. These communities are perennially saturated due to active seepage water which is forced to the surface by underlying clay layers. Trees typically are small to medium sized members of Nyssa, Acer, Liriodendron, Persea, Symplocos, Quercus, Liquidambar. Associates include a number of ericaceous shrubs in these genera: Ilex, Vaccinium, Clethra, Gaylussacia, Lyonia, Leucothoe, Rhododendron, Viburnum, Toxicodendron, Myrica.

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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 21 - 80

Comments: This species is tracked only in South Carolina, so site-specific data is scarce over the bulk of the range. In South Carolina, there are 4 current EOs. Based on the number of total counties of occurrence and the frequency with which botanists encounter it, only a broad estimate of 20-100+ can be made.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Pinckneya bracteata

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Barcode data: Pinckneya pubens

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Pinckneya pubens

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Statistics of barcoding coverage: Pinckneya bracteata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N4 - Apparently Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: Restricted range, regional endemic. Still relatively easy to find in appropriate habitat. Don't be swayed by number of Georgia counties (45); they are half the size of neighboring states' counties. Monotypic genus. It occurs in small numbers, usually less than 30 per population. Clear threats but probably not at critical point yet. Few protected populations.

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Threats

Comments: Conversion of habitat to pine plantations and to agriculture are the two main threats. Included in this is the construction of farm ponds and stock ponds, usually done in stream headwaters.

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Names and Taxonomy

Taxonomy

Comments: Monotypic genus endemic to United States coastal plain. Not closely related to other genera in family Rubiaceae.

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