TY - JOUR T1 - Diagnostic evidence from DELTA and clustering programs, and an INTKEY package for interactive, illustrated identification and information retrieval JF - Can J Botany Y1 - 1997 A1 - Aiken, S. G. A1 - Dallwitz, M. J. A1 - McJannet, C. L. A1 - Consaul, L. SP - 1527 EP - 55 VL - 75 ER -