@inbook {1547, title = {Genealogical perspectives on the species problem}, booktitle = {Experimental approaches to plant systematics - Monographs in Botany from the Missouri Botanical Garden 53}, year = {1995}, pages = {289-303}, publisher = {Missouri Botanical Garden}, organization = {Missouri Botanical Garden}, address = {St, Louis}, keywords = {GENEALOGICAL SPECIES CONCEPT, MONOGRAPHS, species, SPECIES CONCEPTS, SYSTEMATICS}, author = {Baum, D. and Shaw, K. L.}, editor = {Hoch, P. C. and Stephenson, A. G.} }