Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia

Abstract

Within the framework of the preparation of the treatment of the family Dipterocarpaceae for the Flore d'Afrique Centrale, the revision of the genus Monotes in D.R. Congo is presented, including a discussion on its distinction from the closely related genus Marquesia. Monotes has suffered from taxonomic inflation. A much more synthetic treatment than earlier revisions is here proposed, with 15 new synonyms and seven species or subspecies downgraded to varietal rank. Twenty-seven taxa are accepted in D.R. Congo (13 species, 10 varieties and four forms), of which six are new to the flora of the country.