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

Contents of Novon 25 (1)

Editorial
Wendy L. Applequist

Draba ucuncha and D. xylopoda (Brassicaceae), Two New Peruvian Species from La Libertad
Ihsan A. Al-Shehbaz

A Revision of the Mexican Endemic Asta (Brassicaceae)
Ihsan A. Al-Shehbaz

Three New Genera in the Tribe Euclidieae (Brassicaceae)
Ihsan A. Al-Shehbaz & Dmitry A. German

A New Species of Erisma (Vochysiaceae) from Panama
Maria Lúcia Kawasaki, Sumling Castillo & Gordon McPherson

Nomenclatural Novelties in Rosa (Rosaceae) subgenus Rosa Recognized in North America
Walter H. Lewis

New Boraginales from Tropical America 8. Two New Species of Tournefortia (Heliotropiaceae) from Costa Rica
James S. Miller

Nomenclatural Changes in Neotropical Riverweeds (Podostemaceae)
C. Thomas Philbrick, Paula K. B. Philbrick & Claudia P. Bove

The First Fossil Flowers of Bignoniaceae (Lamiales): Catalpa hispaniolae sp. nov. in Dominican Republic Amber
George O. Poinar, Jr.

A New Species of Casimiroa (Rutaceae) from Nicaragua and Costa Rica
Amy Pool & Indiana M. Coronado

Rubiacearum Americanarum Magna Hama Pars XXXV: The New Group Palicourea sect. Nonatelia, with Five New Species (Palicoureeae)
Charlotte M. Taylor & Victoria C. Hollowell

A New Infraspecific Taxon of Iris laevigata (Iridaceae) in Northeast China
Ling Wang, Lei Su, Li-Juan Fan, Fang-Jian Shang & Heng-Li Chen

Typification and Validation of Names in Korean Rubus (Rosaceae)
Ji Young Yang, Seung-Chul Kim, Seon Joo Park & Jae-Hong Pak

Lectotypification of the Name Linum carnosulum var. empetrifolium (Linaceae)
Özer Yılmaz