Orthotrichum keeverae H.A. Crum & L.E. Anderson

Locations ofOrthotrichum keeverae H.A. Crum & L.E. Anderson in Virginia

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Botanical Name
Orthotrichum keeverae H.A. Crum & L.E. Anderson
Common Name
Keever's Bristle Moss
Flora of Virginia Name/Status
Not applicable
Othotrichum keeverae is a rare moss endemic to the mountains and upper Piedmont of North Carolina and Virginia. It is known in Virginia from a single site, where the population is threatened by ongoing mortality of the host ash trees by the exotic pest emerald ash borer. The population was confirmed extant in 2015 by John F. Townsend.
On trunks of Fraxinus americana (white ash) and Carya glabra (pignut hickory) in an open hickory-ash-cedar woodland below massive actiolite schist outcrops, Bald Knob, Franklin County (Biodiversity occurrence data published by DUKE, TENN. Accessed through Consortium of North American Bryophyte Herbaria (CNABH) Data Portal, http//:bryophyteportal.org/portal/index.php, 2015-01-31).
This species, formerly thought to be a Piedmont endemic, was found in 2020 on red cedar on a S-facing shale barren in the Ridge and Valley Province of Botetourt County growing co-mingled with O. ohioense. This opens up the exciting possibility for additional stations on other mid-Appalachian shale barrens.
Native Status

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