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Article
Published: 2017-12-12

Limonium ilergabonum (Plumbaginaceae), a new species from northeastern Iberian Peninsula

Unitat de Botànica, Facultat de Biociències, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Spain
Unitat de Botànica, Facultat de Biociències, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Spain
Instituto de Química Médica (CSIC), C/ Juan de la Cierva 3, E-28006 Madrid, Spain
Facultad de Agronomía, Universidad Central de Venezuela, Apartado 4579, 2101 Maracay, Venezuela
Jardín Botánico, ICBiBE, Universidad de Valencia, C/ Quart 80, E-46008 Valencia, Spain
Unitat de Botànica, Facultat de Biociències, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Spain Societat d’Història Natural de les Illes Balears (SHNB). C/ Margarida Xirgu 16, E-07003 Palma de Mallorca, Balearic Islands, Spain
Eudicots Apomixis breeding system Iberian endemism microspecies taxonomy

Abstract

A new species of Limonium (Plumbaginaceae), L. ilergabonum sp. nov., is described from the inland gypsum soils of the northeastern Iberian Peninsula (Flix, Tarragona province, Spain). The new species is closely related to the Iberian L. hibericum on morphological traits as assessed by multivariate ordination analysis (PCA), but it can be distinguished by the narrower leaves, inflorescence shape, and longer calyx. Limonium ilergabonum shows mixoploidy (2n = 18, 2n = 27), irregular pollen shapes, low levels of pollen stainability, and a single pollen-stigma combination morph (B type). All evidences suggest that L. ilergabonum is a polyploid relict species with an apomictic breeding system that has been originated from 2n = 18 ancestors, but to date any known extant diploid species may be suggested as a likely parental species.