The Struthiopteris spicant (Blechnaceae, Polypodiopsida) complex in Western Europe, with proposals for taxonomic and nomenclatural changes Sonia MolinoJose M. Gabriel y GalánEmily B. Sessa Original Article 16 February 2019 Pages: 255 - 268
Spontaneous caudicle reconfiguration in Dactylorhiza fuchsii: A new self-pollination mechanism for Orchideae Izabela TałałajJarosław KotowiczAda Wróblewska Original Article Open access 20 February 2019 Pages: 269 - 280
Study of the reproductive biology of an Amazonian Heterotaxis (Orchidaceae) demonstrates the collection of resin-like material by stingless bees Amauri H. KrahlAna S. S. de HolandaEmerson R. Pansarin Original Article 21 February 2019 Pages: 281 - 291
Phylogeny of Coussareeae (Rubioideae, Rubiaceae) Stefan D. LöfstrandSylvain G. RazafimandimbisonCatarina Rydin Original Article Open access 20 March 2019 Pages: 293 - 304
The transition to selfing in Azorean Tolpis (Asteraceae) Daniel J. CrawfordMónica MouraJohn K. Kelly Original Article 14 March 2019 Pages: 305 - 317
The effects of sample age and taxonomic origin on the success rate of DNA barcoding when using herbarium material Helena KorpelainenMaria Pietiläinen Short Communication Open access 26 February 2019 Pages: 319 - 324