Honoring Philip Barker Webb: the three intriguing stories of Webbia as a genus name: Nomenclature of Webbia Javier Francisco-Ortega, Riccardo M. Baldini, John C. Manning, Kanchi Gandhi 3-21 PDF Corrigendum DOI: https://doi.org/10.36253/jopt-12929
The extant herbaria from the Sixteenth Century: a synopsis Riccardo M. Baldini, Giovanni Cristofolini, Carlos Aedo 23-33 PDF DOI: https://doi.org/10.36253/jopt-13038
Typification of Costa Rican Orchidaceae described by Rudolf Schlechter. Species variorum collectorum Franco Pupulin, Isler F. Chinchilla, Gustavo Rojas-Alvarado, Melania Fernández, Carlos Ossenbach, Diego Bogarín 35-126 PDF DOI: https://doi.org/10.36253/jopt-12092
Macrosolen zamboangensis (Loranthaceae), a new mistletoe species from Zamboanga Peninsula, Philippines Kean Roe Mazo, Daniel L. Nickrent, Pieter B. Pelser 127-134 PDF Suppl. data DOI: https://doi.org/10.36253/jopt-12339
Studies on Schismatoglottideae (Araceae) of Borneo LXVIII: Bucephalandra adei, a new species from Kalimantan, Indonesian Borneo Wong Sin Yeng, Peter C. Boyce, Adeline Y.M. Hii 135-144 PDF DOI: https://doi.org/10.36253/jopt-12167
Schismatoglottideae of Borneo LXXII – A new species of Schottarum (Araceae) from Sarawak, Malaysian Borneo Wong Sin Yeng, Peter C. Boyce 145-152 PDF DOI: https://doi.org/10.36253/jopt-12176
Studies on Schismatoglottideae (Araceae) of Borneo LXXIII - Schismatoglottis auyongii [Calyptrata Clade], a new species for the Penrissen Range, Sarawak Wong Sin Yeng, Peter C. Boyce 153-157 PDF DOI: https://doi.org/10.36253/jopt-12256
Studies on Schismatoglottideae of Borneo LXXV — Two ornamental new species of Schismatoglottis from Borneo Wong Sin Yeng, John-Michiel Koens, Peter C. Boyce 159-167 PDF DOI: https://doi.org/10.36253/jopt-12810
Prain’s Erycibe (Convolvulaceae) types Ian M. Turner, Anand Kumar 169-172 PDF DOI: https://doi.org/10.36253/jopt-12014
Typification of Geranium arnottianum Steud. (Geraniaceae) Imitiyaz A. Hurrah, Vijay V. Wagh 173-176 PDF DOI: https://doi.org/10.36253/jopt-12406
Tracking Brazil’s Colonization Footprints: First record of the tea plant (Camellia sinensis (L.) Kuntze – Theaceae) naturalized in the Atlantic Forest Hotspot Guilherme Medeiros Antar, Roberto Baptista Pereira Almeida, Marco Antonio Palomares Accardo-Filho, Rafael Gomes Barbosa-Silva 177-183 PDF DOI: https://doi.org/10.36253/jopt-12854
Micro-morphological studies in the genus Balanites Del. in West Africa Emmanuel Chukwudi Chukwuma, Kehinde Adegoke Adeniji, Luke Temitope Soyewo, Temitope Omoniyi Oyebola, Oluwaseun Adeniyi Osiyemi 185-199 PDF DOI: https://doi.org/10.36253/jopt-12026
Ib Friis, Paulo van Breugel, Odile Weber, Sebsebe Demissew. The Western Woodlands of Ethiopia. A study of the woody vegetation and flora between the Ethiopian Highlands and the lowlands of the Nile Valley in the Sudan and South Sudan Riccardo M. Baldini 201-203 PDF DOI: https://doi.org/10.36253/jopt-13039
