Plant Systematics and Evolution

, Volume 187, Issue 1, pp 1–28

Cytoevolutionary patterns inRutaceae

  • H. M. Stace
  • J. A. Armstrong
  • S. H. James
Article

DOI: 10.1007/BF00994089

Cite this article as:
Stace, H.M., Armstrong, J.A. & James, S.H. Pl Syst Evol (1993) 187: 1. doi:10.1007/BF00994089

Abstract

Chromosome numbers for 9 tribes and 73 genera ofRutaceae are examined for the probable chromosome base numbers in these taxa. There is abundant dysploidy and infrageneric polyploidy in the largeRutoideae/Toddalioideae complex. We found that x = 18 was typical for the tribesZanthoxyleae andToddalieae; probably ancestral in theBoronieae and perhaps in theRuteae, Diosmieae, andCusparieae; and characteristic of subfamilyFlindersioideae. Considering the basic position of elements ofZanthoxyleae andToddalieae in the family it appears that diploid x = 18 is ancestral in theRutaceae. The morphologically advancedCitroideae are invariant for x = 9 and may be a product of dysploid reduction.

Key words

AngiospermsRutaceaeCytoevolutionchromosome base numbersdysploidypolyploidycladisticsgondwanan forestsheathlands

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • H. M. Stace
    • 1
  • J. A. Armstrong
    • 2
  • S. H. James
    • 1
  1. 1.Botany DepartmentThe University of Western AustraliaNedlandsAustralia
  2. 2.Department of Conservation and Land ManagementWestern Australian HerbariumComoAustralia