A purple-leaf coffee mutant, sometimes used in genetic testing
Purpurascens is a purple-leaf (well, the new leaves at least) coffee mutant of limited value at this point, production and cup quality-wise. It is maintained in coffee varietyA botanical variety is a rank in the taxonomic hierarchy below the rank of species and subspecies and above the rank of form (form / variety / subspecies... ...more garden collections since the leaf color can help track accessions in stages of genetic or other plant research.