New Contributions on Flora and Vegetation of northeastern Portugal ultramafic outcrops

Resumen

In this work we present some syntaxonomic novelties on the vegetation of the referred ultramafic outcrops focused onthree new associations: Jonopsidio abulensis-Sedetum maireani, Armerio daveaui-Agrostietum castellanae and Seseli peixotoani-Avenuletum lusitanicae; in addition, a new nomenclatural combination of an endemic taxon from the Morais massif(Armeria langei subsp. marizii) is proposed. We also clarify the phytocoenotic structure of the Portuguese vegetation seriesthrough a simple diagrammatic representation, which is then applied to one unique climatophilous vegetation series presentin the ultramafic rocks of northeastern Portugal: Genisto hystricis-Querco rotundifoliae Sigmetum.