Foliicolous lichens: ecological and chorological data*

Abstract

SERUSIAUX, E., 1989. Foliicolous lichens: ecological and chorological data. Foliicolous lichens are present throughout tropical and subtropical forests but are particularly common in undisturbed rain forests at low elevations. Their presence in south-west Europe and in the Caucasus with 23 species is considered to be a relic of Tertiary times. Ecological groups (in the sense of P. Duvigneaud) are determined, especially for the European taxa. Factorial analysis has been performed on a large collection from Central East Africa which enables the relationships between the foliicolous floras of the different types of forests present in the area (equatorial, mountane, riverine, etc.) to be determined.