Aguiar, CarlosMonteiro-Henriques, TiagoSánchez-Mata, Daniel2019-02-252019-02-252013Aguiar, C., Monteiro-Henriques, T. & Sánchez-Mata, D. New contributions on Flora and Vegetation of northeastern Portugal ultramafic outcrops. Lazaroa 34: 141-150 (2013)0210-9778http://hdl.handle.net/10400.5/17426In this work we present some syntaxonomic novelties on the vegetation of the referred ultramafic outcrops focused on three 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 series through a simple diagrammatic representation, which is then applied to one unique climatophilous vegetation series present in the ultramafic rocks of northeastern Portugal: Genisto hystricis-Querco rotundifoliae Sigmetumengultramafic vegetationultramafic floraultramafic vegetation seriesArmeria langei subsp.mariziiPortugaljournal articledoi: 10.5209/rev_LAZA.2013.v34.n1.43642