Elymus macgregorii Brooks & Campbell

Locations ofElymus macgregorii Brooks & Campbell in Virginia

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Botanical Name
Elymus macgregorii Brooks & Campbell
Common Name
Early Wild Rye, MacGregor's Wild Rye
Flora of Virginia Name/Status
Elymus macgregorii Brooks & Campbell
New taxon, see J. Ky. Acad. Sci. 61(2):88-98 (2000). This species sheds pollen and begins to set seed from mid-May to mid-June, considerably earlier than other Eymus species of our region. Nevertheless, it was clearly overlooked, and commonly misidentified as E. virginicus, in the past. Since 2005, E. macgregorii has been found to be exceedingly abundant in forested floodplains along Piedmont reaches of the James, Potomac, Roanoke, and Dan Rivers, sometimes extending quite far up small-river tributaries. It also occurs in montane river valley floodplains but its status there is less well documented.
Well-drained floodplain forests, primarily along major rivers and their larger tributaries; occasionally in disturbed, mesic upland habitats such as moist forest edges or clearings. Locally common in the Piedmont and mountains; a dominant grass in late spring and early summer along the James, Potomac, and Shenandoah rivers and probably elsewhere.
Native Status

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