Proposal for the limits of the new Biogeographic District: Alvo-Gardunhense (Montemuro and Estrela Sierras Sector, Atlantic Orolusitania Subprovince, Atlantic European Province). F.a.-P.l., Frangulo alni-Prunetum lusitanicae; G.f.-Q.b., Genisto falcatae-Quercetum broteroanae; P.l.-C.a., Pruno lusitanicae-Coryletum avellanae; S.g.-S.n., Scrophulario grandiflorae-Sambucetum nigrae ass. nova.

 
 
  Part of: Raposo M, del Río S, Vázquez-Pardo F, Costa JC, Cano-Ortiz A, Pinto-Gomes C (2023) New plant communities to define the southern boundary of the European Atlantic Province in mainland Portugal. Plant Sociology 60(2): 39-55. https://doi.org/10.3897/pls2023602/03