Reference

Tatiana T. Souza-Chies, Gabriel Bittar, Sophie Nadot, Leigh Carter, Evelyne Besin, Bernard Lejeune (1997): Phylogenetic analysis of Iridaceae with parsimony and distance methods using the plastid gene rps4 – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 204: 109 - 123.