The above collections represent the second record for the state of Virginia, and may well establish the northernmost station for the species in the eastern United States. According to B.L. Lipscomb (Sida 8:320-327. 1980), this Old World weed is spreading throughout the warmer regions of North America. The only previous record of the species from the state is a Fernald specimen from Owl Creek in Virginia Beach. R.W. Tyndall, who found the species in northeastern North Carolina, was unable in 1978 to locate the plant at Fernald's Virginia Beach locality (Castanea 48:277-280. 1983). The Amelia County plants occur in two red clay mudpuddles where they withstand periodic disturbance from vehicular traffic.
Copyright © 1989, Southern Appalachian Botanical Society. This article first appeared in Castanea: 54:3 (1989), 207-208.
Please note that downloads of the article are for private/personal use only.
Hayden, W. John. "Noteworthy Collections: Virginia." Castanea 54, no. 3 (September 1989): 207-08.