Plant Systematics and Evolution

, Volume 299, Issue 8, pp 1561–1575

Multivariate studies of Ipheion (Amaryllidaceae, Allioideae) and related genera

  • Agostina B. Sassone
  • Liliana M. Giussani
  • Encarnación Rosa Guaglianone
Original Article

DOI: 10.1007/s00606-013-0819-5

Cite this article as:
Sassone, A.B., Giussani, L.M. & Guaglianone, E.R. Plant Syst Evol (2013) 299: 1561. doi:10.1007/s00606-013-0819-5

Abstract

Ipheion, as recognized by Guaglianone (Darwiniana 17:159–242, 1972), is a small genus of the family Amaryllidaceae, subfamily Allioideae, tribe Gilliesieae endemic to South America. Since 1800, the species of Ipheion were treated under Beauverdia, Brodiaea, Milla, Nothoscordum, Tristagma or Triteleia. Nowadays, some species of Ipheion are treated as Tristagma and some other under Nothoscordum. In this paper, we analyzed the morphological variation among species of Ipheion and related genera using a numerical taxonomic approach based on overall similarity, to investigate the intergeneric and infrageneric variations to the circumscribed groups. Based on 141 operational taxonomic units and 51 morphological characters, multivariate analyses were performed. Results showed that Ipheion separated into two groups according to Guaglianone’s sectional treatment: Ipheion sect. Ipheion is morphologically more similar to the studied species of Tristagma, while I. sect. Hirtellum can be separated from Nothoscordum/Zoellnerallium and from Tristagma and allies. These a priori groupings were tested using discriminant and univariate analyses. Diagnostic characters were selected to differentiate groups. Previous taxonomic treatments are discussed and results are also evaluated using additional karyological and geographical data.

Keywords

Amaryllidaceae Ipheion Morphological variation Nothoscordum Tristagma Multivariate analyses 

Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • Agostina B. Sassone
    • 1
  • Liliana M. Giussani
    • 1
  • Encarnación Rosa Guaglianone
    • 1
  1. 1.Instituto de Botánica DarwinionBuenos AiresArgentina