Novon is a quarterly, peer-review journal and publishes short articles whose primary function is the establishment of nomenclature in vascular plants and bryophytes.

Contents of NOVON 24 (4)

Unveiling the Enigmatic Pabst and Dungs’s Promenaea rollissonii Alliance (Orchidaceae)
Felipe Fajardo V. A. Barberena, José Fernando A. Baumgratz & Fábio de Barros

Five New Species of Eugenia (Myrtaceae) from Panama
Fred R. Barrie, Christel Ramos, Orlando O. Ortiz, Irving Vergara-Pérez & Gordon McPherson

A New Combination in Deschampsia (Poaceae) in Arctic North America
Jorge Chiapella

Gypsophila yazdiana (Caryophyllaceae), a New Species from Iran
Atiye Nejad Falatoury, Mostafa Assadi & Farrokh Ghahremaninejad

Lectotypification of the Linnaean name Lythrum thymifolia (Lythraceae)
P. Pablo Ferrer-Gallego

Typifications in the Genus Fimbristylis (Cyperaceae), II
Suman Halder & Sangita Dey

Taxonomic Transfer of Fernandezia pastorelliae (Orchidaceae) to Orchidotypus
Marta Kolanowska, Dariusz L. Szlachetko & Katarzyna Mystkowska

Una Nueva Especie, Omiltemia guerrerensis (Rubiaceae) de Guerrero, México
Lucio Lozada-Pérez & Jorge Rojas Gutiérrez

A New Species of Conceveiba (Euphorbiaceae) from Belize
Gordon McPherson & Bruce K. Holst

Tipificaciones en Salvia (Lamiaceae)
Nataly O’Leary & Pablo Moroni

Notas sobre Limonium (Plumbaginaceae) en el Noroeste Ibérico, I: Limonium serpentinicum, Nueva Especie
Rubén Pino Pérez, Francisco Javier Silva-Pando & Juan José Pino Pérez

New South American Species of Gentiana and Gentianella (Gentianaceae)
James S. Pringle

A New Combination for a Chinese Species of Wikstroemia (Thymelaeaceae)
Ce Shang, Shuai Liao, Zhi-Xiang Zhang & Liang-Cheng Zhao

Three New Cyperaceae from the Cuyuni-Mazaruni Region of Guyana (South America)
Mark T. Strong

Psilochilus francoae (Orchidaceae, Triphoreae), a New Species from Colombia
Dariusz L. Szlachetko & Przemyslaw Baranow

Rubiacearum Americanarum Magna Hama Pars XXXI: More New Neotropical Species and Morphological Notes for Psychotria (Psychotrieae)
Charlotte M. Taylor

Erratum

Author Index

Subject Index