Caracterización de la flora vascular de Altos de Chicauma, Chile (33o S)

a total richness of 602 specifc and infra-specifc taxa is reported for the locality of altos de chicauma, situated in the metropolitan region？s coastal mountain range, chile (33o s), between 500 and 2.200 m of altitude. chile？s endemic taxa constitute 41% and the southern cone endemics equal 66% of the total flora, while 14% corresponds to alien flora. the total flora is characterized according to its presence in seven habitat-types. a commented systematic list is presented where each taxon is characterized according to its growth habit, geographic origin, relative frequency, and presence per habitat-type in chicauma. herbarium material supporting the presence in this locality is indicated for 572 taxa (95%). the total flora and the habitat-types？ partial floras were characterized according to their richness, origin and biologic-types compositions. a similarity analysis between the habitats？ native floras indicates that the species composition differs signifcantly to the rest in ？high-mountainous hydric environments？, ？creeks and ravines？, ？xeric？, and in the pairs, ？valley sclerophyllous - montane sclerophyllous？ and ？deciduous - high-mountainous？ habitats. the presence of 14 endangered species, nine central chile？s coastal mountain range endemics, 13 metropolitan-valparaiso regions？ mountain endemics, and fve distributional limits are reported for this locality.