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15 June 2022 Two Coastal Plain Dichanthelium (Poaceae: Paniceae) Disjunct in Tennessee Grasslands and Their Conservation
Claire M. Ciafré, L. Dwayne Estes
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Abstract

Dichanthelium wrightianum, a species of panic grass whose North American range is exclusive to the Coastal Plain, is reported from Tennessee for the first time. A single population of this species was discovered in a wet grassland remnant in the Eastern Highland Rim physiographic region alongside many other species disjunct from the Coastal Plain. Another Coastal Plain Dichanthelium, D. roanokense, was found at a second wet grassland nearby. While D. roanokense was previously reported for Tennessee, it has not been recently documented or confirmed to be extant within the state and its current status should be reviewed. The ecology and conservation of Tennessee populations of both species are discussed.

Copyright 2022 Southern Appalachian Botanical Society
Claire M. Ciafré and L. Dwayne Estes "Two Coastal Plain Dichanthelium (Poaceae: Paniceae) Disjunct in Tennessee Grasslands and Their Conservation," Castanea 87(1), 121-128, (15 June 2022). https://doi.org/10.2179/0008-7475.87.1.121
Received: 7 September 2021; Accepted: 18 April 2022; Published: 15 June 2022
KEYWORDS
Dichanthelium roanokense
Dichanthelium wrightianum
Eastern Highland Rim
panic grass
Southeastern grasslands
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