Asimina angustifolia Raf., Slimleaf pawpaw (ANNONACEAE)—Charleston County: Asimina angustifolia was collected on Wadmalaw Island, South Carolina near the end of Brigger Hill Road on April 22, 2008 with Richard Porcher and Billy McCord and originally identified by Patrick McMillan at the Clemson herbarium. The population was found growing in a mixed hardwood forest on a bluff overlooking Adams Creek near the Town of Rockville, South Carolina. Voucher specimens from this population have been placed in The Citadel herbarium (CITA) in Charleston, South Carolina and in the Clemson University herbarium (CLEMS). Significance. This collection represents a significant range extension to the northeast and is a state record for Asimina angustifolia in South Carolina. According to collections from the University of North Carolina herbarium (NCU), the closest, observed populations of A. angustifolia are from Tattnall and Toombs Counties in southern Georgia. Of particular note was the presence of zebra swallowtail (Eurytides marcellus) larvae feedings upon the leaves of several individuals. It is suspected that a larger population of Asimina occurs nearby to support this population of zebra swallowtail butterflies, an obligate to Asimina spp. (Scott 1986).