Details of this species in Virginia Status: Alien
Invasiveness: Invasive
Occurrence: Established
Source: Wavyleaf Basketgrass Task Force, 2009; Westbrooks & Imlay, 2009 Arrival Date:
Introduction: Unintentional (accidentally) Species Notes for this Location:
Oplismenus hirtellus ssp. undulatifolius has now been found in at least four sites in Virginia. A small population was found in Great Falls Park, and hand-weeded out. It was discovered in Shenandoah National Park in 2005 and has established over about 80 acres, 10 acres of which are reported to be heavily infested. Fraser Preserve, a The Nature Conservancy property in VA, has a large infestation that has been scheduled for herbicide treatment. A 3 acre infestation in dry, shaded high meadows Peidmont Environmental Council land near Ashby Gap cites hikers as the likely means of infestation. Its present distributions are available from MDNRmap, 2009 and EDDMaps, 2009 (Wavyleaf Basketgrass Task Force, 2009; Westbrooks & Imlay, 2009). Management Notes for this Location:
A portion of the Oplismenus hirtellus ssp. undulatifolius population in Shenandoah National Park of about 45 acres of outlying patches, was treated with 2 percent glyphosate and nonionic surfactant. When surveyed 6 weeks later the population seemed tough and unresponsive, retaining greenness. It flowers in late July, when spraying seemed less effective. It was concluded that Roundup works better late in the year, while grass inhibitors are more effective early in the season (Wavyleaf Basketgrass, 2009). Impacts:
Competition: Oplismenus hirtellus ssp. undulatifolius displaces native plants in several locations in Virginia (Westbrooks & Imlay, 2009; Wavyleaf BasketgrassTask Force, 2009) Last Modified: 19/03/2010 2:00:41 p.m.
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