Webbia: 120 years of history between difficulties and milestones Riccardo M. Baldini 3-13 PDF DOI: https://doi.org/10.36253/jopt-19143
The species of Burseraceae in Ethiopia – their distribution patterns, association with major vegetation types, species richness, and extinction risks Ib Friis, Sebsebe Demissew 15-59 PDF DOI: https://doi.org/10.36253/jopt-19144
A synthesis of the biogeographic history of Brazil’s phytogeographic domains Aline Possamai Della, Jefferson Prado 61-75 PDF DOI: https://doi.org/10.36253/jopt-19145
Untangling the nomenclatural and botanical history of the Cuban endemic palm Copernicia macroglossa Schaedtler Kanchi N. Gandhi, Javier Francisco-Ortega, Larry Noblick, Andre A. Naranjo, M. Patrick Griffith 77-91 PDF DOI: https://doi.org/10.36253/jopt-19146
A taxonomic revision of the “Quadrispina clade” of Barleria sect. Prionitis Ellie Defty, Sebastian Hatt, Mats Thulin, Hanny Lidetu, Iain Darbyshire 93-120 PDF Suppl. Data DOI: https://doi.org/10.36253/jopt-19147
A taxonomic synopsis of Heterotis (Melastomataceae), including H. kupensis sp. nov., a threatened species endemic to Mt Kupe, Cameroon Vida J. Svahnström, Martin Cheek 121-137 PDF DOI: https://doi.org/10.36253/jopt-19149
A synoptic revision of the creeping herbaceous African species of Ardisia (Primulaceae or Myrsinaceae) with six new species from Cameroon and Gabon Peng Peng, Martin Cheek 139-168 PDF DOI: https://doi.org/10.36253/jopt-19150
Novelties in Bakerella (Loranthaceae) from Madagascar Carel C. H. Jongkind 169-174 PDF DOI: https://doi.org/10.36253/jopt-19151
Plagiosiphon intermedium (Leguminosae, Detarioideae), a new tree species from the Ngovayang forest in Cameroon Xander M. van der Burgt, Eric Ngansop Tchatchouang, Barthélemy Tchiengué 175-181 PDF DOI: https://doi.org/10.36253/jopt-18480
Keetia tinka & K. kounounkan sp. nov. (Rubiaceae - Vanguerieae) new threatened forest climbers and shrubs of sandstone plateaux of the Republic of Guinea Faya Julien Simbiano, Charlotte Couch, Sekou Magassouba, Xander M. van der Burgt, Jack Plummer, Martin Cheek 183-195 PDF DOI: https://doi.org/10.36253/jopt-19152
A phylogeny of the Cotteinae (Poaceae, Chloridoideae, Eragrostideae) Paul M. Peterson, Konstantin Romaschenko, Yolanda herrera Arrieta 197-205 PDF DOI: https://doi.org/10.36253/jopt-19153
Revision of the genus Lasiacis (Griseb.) Hitchc. (Poaceae, Paniceae, Boivinellinae) Riccardo M. Baldini 207-350 PDF DOI: https://doi.org/10.36253/jopt-19154
