Six new species of coffee (Coffea) from northern Madagascar

Six new species of Coffea are described as new to science: Coffea callmanderi, C. darainensis, C. kalobinonensis, C. microdubardii, C. pustulata and C. rupicola. All six species are endemic to northern Madagascar; four species are narrowly endemic to specific forest areas. Associated information, including distribution maps, conservation assessments, phenology and taxonomic notes are provided, and two species are illustrated with line drawings.