Dr. Moses Cousins Jr.: The mysterious Iowa contributor to Alphonso Wood’s Class-book of Botany Thomas G. Lammers OriginalPaper 31 May 2017 Pages: 253 - 264
Relationships in the Botrychium campestre (Ophioglossaceae) complex Donald R. FarrarArthur V. Gilman OriginalPaper 09 March 2017 Pages: 265 - 275
What the Penaeaceae alliance (Myrtales) tells us about the nature of vestured pits in xylem Sherwin Carlquist OriginalPaper 08 June 2017 Pages: 276 - 294
Diplazium hybrids involving D. plantaginifolium and D. ternatum from Mexico and Central America Weston L. TestoMichael SundueAlejandra Vasco OriginalPaper 25 April 2017 Pages: 295 - 306
×Cyclobotrya: A new hybrid genus between Cyclodium and Polybotrya (Dryopteridaceae) from the Brazilian Amazon Mathias Erich EngelsBianca Kalinowski Canestraro OriginalPaper 10 March 2017 Pages: 307 - 312
Taxonomic and nomenclatural notes concerning Ormopteris and Pellaea (Pteridaceae) in Brazil Jefferson PradoRegina Y. HiraiEric Schuettpelz OriginalPaper 14 April 2017 Pages: 313 - 315
A new species and a new combination in Ctenitis (Dryopteridaceae) from South America Raquel Stauffer ViverosAlexandre Salino OriginalPaper 24 March 2017 Pages: 316 - 322
Spiranthes igniorchis (Orchidaceae), a new and rare cryptic species from the south-central Florida subtropical grasslands Matthew C. PaceSteve L. OrzellKenneth M. Cameron OriginalPaper 31 May 2017 Pages: 323 - 339
Eschweilera correae (Lecythidaceae), a new species from the cloud forests of Panama and Costa Rica Juvenal E. Batista G.Scott A. Mori OriginalPaper 14 April 2017 Pages: 340 - 346
Cuatro especies nuevas de Indigofera (Leguminosae, Papilionoideae) para la Flora de México RAMIRO CRUZ DURÁNMARIO SOUSA S. OriginalPaper 03 April 2017 Pages: 347 - 358
Two new species of Henriettea (Melastomataceae, Henrietteeae) for the flora of the Greater Antilles Wilder Carmenate-ReyesFabián A. MichelangeliEldis R. Bécquer OriginalPaper 08 March 2017 Pages: 359 - 369
Miconia complanata (Miconieae: Melastomataceae), a new species from the border between Ecuador and Peru Janelle M. BurkeFabian MichelangeliDiana Fernández-Fernández OriginalPaper 03 April 2017 Pages: 370 - 375
Four new species of Trattinnickia from South America. Studies in Neotropical Burseraceae XXII Douglas C. DalyMaria da Fatima Melo OriginalPaper 14 April 2017 Pages: 376 - 386
Taxonomic revision of the genus Catalpa (Bignoniaceae) Richard T. OlsenJoseph H. Kirkbride Jr OriginalPaper Open access 25 April 2017 Pages: 387 - 421