1. The Struthiopteris spicant (Blechnaceae, Polypodiopsida) complex in Western Europe, with proposals for taxonomic and nomenclatural changes

   • Sonia Molino
   • Jose M. Gabriel y Galán
   • Emily B. Sessa

   Original Article 16 February 2019 Pages: 255 - 268

   

2. Spontaneous caudicle reconfiguration in Dactylorhiza fuchsii: A new self-pollination mechanism for Orchideae

   • Izabela Tałałaj
   • Jarosław Kotowicz
   • Ada Wróblewska

   Original Article Open access 20 February 2019 Pages: 269 - 280

   

3. Study of the reproductive biology of an Amazonian Heterotaxis (Orchidaceae) demonstrates the collection of resin-like material by stingless bees

   • Amauri H. Krahl
   • Ana S. S. de Holanda
   • Emerson R. Pansarin

   Original Article 21 February 2019 Pages: 281 - 291

   

4. Phylogeny of Coussareeae (Rubioideae, Rubiaceae)

   • Stefan D. Löfstrand
   • Sylvain G. Razafimandimbison
   • Catarina Rydin

   Original Article Open access 20 March 2019 Pages: 293 - 304

   

5. The transition to selfing in Azorean Tolpis (Asteraceae)

   • Daniel J. Crawford
   • Mónica Moura
   • John K. Kelly

   Original Article 14 March 2019 Pages: 305 - 317

   

6. The effects of sample age and taxonomic origin on the success rate of DNA barcoding when using herbarium material

   • Helena Korpelainen
   • Maria Pietiläinen

   Short Communication Open access 26 February 2019 Pages: 319 - 324