An introduced species of wavyleaf basketgrass (WLBG) is threatening to cross the Mason-Dixon line into Pennsylvania soon—and may already be here. The noxious weed was found in Maryland in 1996, and has since been documented in several locations in Maryland and Virginia. While no occurrences have been documented, there is a good possibility it has already encroached into Pennsylvania.
The species, Oplismenus hirtellus subspp. undulatifolius, is native to southern Europe and southeastern Asia. It is a low-lying, trailing perennial grass, branching and rooting at nodes along creeping stems called stolons. It also reproduces from seeds, which are sticky and may adhere to clothing, animals, or other surfaces for dispersal.
The state of Maryland has developed a task force for early-detection and rapid response with the hopes of completely eradicating or significantly slowing the spread of WLBG. The noxious weed team in Pennsylvania is going to do surveys along the Appalachian Trail near the Maryland border this summer for the species. For more information about WLBG, visit here.
(Editor’s note: Special thanks to Bureau of Forestry Botonist Carrie Leigh Gilbert.)