A QUANTITATIVE STUDY OF THE VEGETATION SURROUNDING A XANTHORHIZA SIMPL1C1SSIMA (RANUNCULACEAE) POPULATION AT FORT POLK IN WEST CENTRAL LOUISIANA

摘要

Yellow root (Xanthorhiza simplicissima Marsh.) is a rare species (SI) in Louisiana known only from Vernon Parish. Quantitative data from 60 belt transects are reported and the plant community associated with yellow root is described. Yellow root in Louisiana is found along the edge of a baygall stream and is associated with the tree species Magnolia virginiana, Nyssa biflora, and Liquidambar styraciflua; the shrub species Lyonia lucida. Ilex coriácea, and Vaccinium elliottii; and the herbaceous species Chasmanthium laxum, Mitchella repens, and Dichanthe-liurn commutatum. Yellow root is absent downstream in a more mesic area created by a larger natural levee associated with a larger stream.