Manual of the Vascular Flora of the Carolinas
Albert E. Radford, Harry E. Ahles, and C. Ritchie Bell were all members of the department of botany at the University of North Carolina at Chapel Hill when they created this manual.  Radford was professor of botany and director of the herbarium.Harry E. Ahles was curator of the herbarium and member of the department of botany at the University of North Carolina at Chapel Hill.0