1. New records of the rare North American endemic Chara brittonii (Characeae), with comments on its distribution

   • Kenneth G. Karol
   • Mitchell S. Alix
   • John D. Hall

   OriginalPaper 04 April 2018 Pages: 277 - 288

   

2. Geographic distribution, habitat characterization, and conservation status of Bolboschoenus bulrushes (Cyperaceae) in the Hudson River Estuary, USA

   • Robert F. C. Naczi
   • Scottie L. Sheaffer
   • Charles J. Zimmerman

   OriginalPaper 29 May 2018 Pages: 289 - 305

   

3. Magnolia brasiliensis (Magnoliaceae), a new species and new record for the Northeastern region of Brazil

   • Cecília Oliveira de Azevedo
   • Lucas Cardoso Marinho
   • J. Antonio Vázquez-García

   OriginalPaper 03 May 2018 Pages: 306 - 311

   

4. The Ocotea aureotomentosa (Lauraceae) hypothesis based on the morphological line of evidence

   • Leandro C. S. Assis
   • Caroline C. A. Silva
   • Ione S. H. Salim

   OriginalPaper 14 May 2018 Pages: 312 - 315

   

5. Novedades taxonómicas del género Schefflera (Araliaceae) para Colombia

   • Jáider Jiménez-Montoya
   • Álvaro Idárraga-Piedrahíta

   OriginalPaper 06 March 2018 Pages: 316 - 323

   

6. Two new species of Arachnothryx (Rubiaceae) from Oaxaca, Mexico

   • Alejandro Torres-Montúfar
   • Helga Ochoterena

   OriginalPaper 12 March 2018 Pages: 324 - 332

   

7. A new species of Protium from Guyana. Studies in Neotropical Burseraceae XXIII

   • Douglas C. Daly

   OriginalPaper 22 March 2018 Pages: 333 - 336

   

8. Rediscovery of Banisteriopsis magdalenensis (Malpighiaceae): Notes on morphology, distribution, and ecology of an endemic and threatened species from the Atlantic Forest of Brazil

   • Rafael Felipe de Almeida
   • Raquel Negrão
   • Gustavo Martinelli

   OriginalPaper 09 April 2018 Pages: 337 - 341

   

9. Recognition of Miconia sect. Sagraeoides (Melastomataceae: Miconieae) and associated nomenclatural changes

   • J. Dan Skean Jr
   • Walter S. Judd
   • Gretchen M. Ionta

   OriginalPaper 14 May 2018 Pages: 342 - 355

   

10. Assembling the puzzle of Byrsonima fanshawei (Malpighiaceae): Emended description and new records for a rare species

    • Augusto Francener
    • Rafael Felipe de Almeida
    • Maria Candida Henrique Mamede

    OriginalPaper 16 May 2018 Pages: 356 - 363

    

11. A new Zamia (Zamiaceae) from Colombia

    • Dennis Wm. Stevenson
    • Dairon Cárdenas López
    • Nicolás Castaño Arboleda

    OriginalPaper 19 June 2018 Pages: 364 - 368

    

12. Chromosome counts in Chaetogastra (Melastomataceae, Melastomateae)

    • Fabrício Schmitz Meyer
    • Klenya Rocha Braga
    • Renato Goldenberg

    OriginalPaper 15 February 2018 Pages: 369 - 376

    

13. Correction to: Chromosome counts in Chaetogastra (Melastomataceae, Melastomateae)

    • Fabrício Schmitz Meyer
    • Klenya Rocha Braga
    • Renato Goldenberg

    Correction 11 May 2018 Pages: 377 - 377