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Published on: February 20, 2012
Xochiquetzallia (Asparagaceae, Brodiaeoideae), a new genus segregated from the paraphyletic Dandya
Jorge Gutiérrez1, Teresa Terrazas2
1Área de Biología, Departamento de Preparatoria Agrícola, Universidad Autónoma Chapingo, Carretera México-Texcoco km 38.5, Texcoco 56230, Estado de México, México Universidad Autónoma Chapingo Texcoco Mexico.
Abstract:
A new genus, Xochiquetzallia, for the Brodiaeoideae, Asparagaceae family is here proposed. A taxonomic analysis based on morphology highlights its synapomorphies. The characters that distinguish Xochiquetzallia are the absence of a pith in the gynophore and the presence of an entire stigma. The recognition of Dandya purpusii as a monotypic genus is supported by the development of a short floral tube (< 2 mm) and a pith in the gynophore, as well as a divided stigma shared with the other genera of the Milla clade, Bessera, Jaimehintonia, Petronymphe and Milla. A key to its taxonomic determination is given for both the Xochiquetzallia species and the Milla clade genera.
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