TY - JOUR T1 - Choosing among alternative "phylogenetic" species concepts JF - Systematic Botany Y1 - 1995 A1 - Baum, D. A. A1 - Donoghue, M. J. SP - 560 EP - 573 KW - CLADISTICS KW - PHYLOGENETIC SPECIES CONCEPT KW - species KW - SPECIES CONCEPTS VL - 20 N1 - Snow 2; ; ;, ER -