As result of several field trips following PhD researches in Marianic-Monchiquensean Sector, we describe a new broomland association named
Genistetum triachanthi-polyanthi as a thermomediterranean, oceanic and sub-humid to humid, schistose association. The 26 relevés analysis, combining
phytosociologic methodology with hierarchical cluster analysis (Ward's Hierarchical Clustering, based on Bray-Curtis distance) allowed the
segregation of this Monchiquense association.
Appearing as a regressive stage, or fringe, of secondary or edaphoxerophilous cork oak and, punctually, holm oak woodlands, it reveals a high sinecological
value, in a wide variety of edaphoclimatic typologies, despite its poorest species number, since it includes restrict distribution taxa with
high conservational value.
At last, sintaxonomic issues are highlighted as these hyperxerophilous broomlands detach themselves easily from main Cytisetea scopario-striati
diagnosis, being intermixed in contrasting ecological diagnosis, with major frequency of Calluno vulgaris-Ulicetea minoris elements, under extremely
different edaphoclimatic envelopes, different landscapes and serial dynamics
