Valdeyron Georges, Lloyd David G
Centre National de la Recherche Scientifique, BP 5051, 34033 Montpellier Cedex, France.
Botany Department, University of Canterbury, Christchurch, New Zealand.
Evolution. 1979 Jun;33(2):673-685. doi: 10.1111/j.1558-5646.1979.tb04720.x.