Reasserting the priority of Hypericum cordiforme A.St.-Hil. (Hypericaceae) over H. cordatum (Vell.) N.Robson Cleusa Vogel ElySérgio Augusto de Loreto BordignonIlsi Iob Boldrini OriginalPaper 14 September 2018 Pages: 379 - 382
Notes on three species of Campyloneurum (Polypodiaceae) from Costa Rica and Panama Robbin C. MoranPaulo H. Labiak OriginalPaper 14 September 2018 Pages: 383 - 393
A new Maxillariella (Orchidaceae: Maxillariinae) from Costa Rica and Panama Diego BogarínZuleika SerracínZabdy Samudio OriginalPaper 17 August 2018 Pages: 394 - 398
A new long-leaved species of Asplundia (Cyclanthaceae) from Colombia Dino TuberquiaEduardo da Silva Leal OriginalPaper 16 August 2018 Pages: 399 - 404
Two new species of Tovomita (Clusiaceae) from Amazonian forest Lucas Cardoso Marinho OriginalPaper 05 July 2018 Pages: 405 - 411
Clusia guabalensis (Clusiaceae), a new hemiepiphyte species with floral resins from the Atlantic wet forest in Panama Manuel LujánJorge ArandaKlaus Winter OriginalPaper 25 June 2018 Pages: 412 - 417
Generic limits re-visited and an updated sectional classification for Protium (tribe Protieae). Studies in Neotropical Burseraceae XXV Douglas C. DalyPaul V. A. Fine OriginalPaper 24 September 2018 Pages: 418 - 426
Notes on the Burseraceae in central Amazonia, including four new taxa. Studies in neotropical Burseraceae XXVI Douglas C. Daly OriginalPaper 29 August 2018 Pages: 427 - 444
Two new species of Microlicia (Melastomataceae) from the Cadeia Do Espinhaço, Brazil Ricardo PacificoFrank Almeda OriginalPaper 07 August 2018 Pages: 445 - 454
A revision of the Miconia ulmarioides complex (Melastomataceae: Miconieae) Nichole M. TiernanFabián A. Michelangeli OriginalPaper 20 August 2018 Pages: 455 - 477
Two new species of Lycianthes series Tricolores (Solanaceae) from southern Mexico and Guatemala Ellen DeanMario Esteban Véliz-PérezLuis Velásquez OriginalPaper 07 August 2018 Pages: 478 - 487