Contribution to the knowledge of the Moroccan mountain vegetation

Different types of plant communities, till now undetected in Morocco, are here described using the phytosociological method. The following new subassociations and associations are proposed: Anthyllido polycephalae-Stachydetum fontqueri subass. quercetosum rotundifoliae is a machia from the Northern Rif Mountains; Genisto anglicae-Ericetum ciliaris subsass. pinguiculetosum lusitanicae is a heathland from the Bou Hassim range in the Western Rif; Cephalario maroccanae-Inuletum maletii is a megaphorbic community from the Middle Atlas; Bellis caerulescendis-Heracletum sphondyllii is a megaphorbic community from the High Atlas; Arenario armerinae-Sideritetum matris-fi liae is a high mountain grassland from the Tichchoukt range in the Middle Atlas. New data are given for the syntaxa already described but with the distribution, variability and ecology not well known. This is the case of the following associations: Polysticho setiferi-Prunetum lusitanicae, a riverine woodland from the W Rif Mountains; Primulo acaulis-Betuletum celtibericae, a birch woodland from the C Rif and Astragaletum numidico-maroccani a high mediterranean mountain plant community from the Western Rif. As a conclusion, the vegetation of the peculiar habitats that occur in reduced areas is only partially known