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 (2)

Silene shehbazii (Caryophyllaceae), a New Species from Kurdistan, Iraq
Saman A. Ahmad

Notes on the Dimocarpus longan (Sapindaceae) Complex
Boonchuang Boonsuk & Pranom Chantaranothai

A New Species of Disocactus (Cactaceae) from El Salvador
Gabriel Cerén, Jenny Menjívar & Salvador Arias

A New Species of Wettinia (Arecaceae: Arecoideae: Iriarteeae) from Panama
José De Gracia, Michael H. Grayum & George E. Schatz

Remarks on the Typification of the Linnaean Name Platanus occidentalis (Platanaceae)
P. Pablo Ferrer-Gallego

Polystichum tiandengense (subg. Haplopolystichum; Dryopteridaceae), a New Cave Fern from Guangxi, China
Hai He & Li-Bing Zhang

Potentilla tuberculifera, a New Species of Rosaceae from Hubei, China
Can Lei, Ying Wang & J. Z. Dong

Primula hubeiensis (Primulaceae), a New Species from Central China
Xinwei Li, Dachuan Bao, Handong Huang & Jiafen Xie

An Extinct Domesticated Subspecies of Erect Knotweed in Eastern North America: Polygonum erectum subsp. watsoniae (Polygonaceae)
Natalie G. Mueller

Parasenegalia and Pseudosenegalia (Fabaceae): New Genera of the Mimosoideae
David S. Seigler, John E. Ebinger, Chance W. Riggins, Vanessa Terra & Joseph T. Miller

A Taxonomic Revision of Orinus (Poaceae) with a New Species, O. intermedius, from the Qinghai-Tibet Plateau
Su Xu, Liu Yu-Ping, Wu Gui-Li, Luo Wen-Chun & Liu Jian-Quan

Another Taxonomic Review of the Neotropical Genus Joosia (Rubiaceae, Cinchoneae)
Charlotte M. Taylor

Rubiacearum Americanarum Magna Hama Pars XXXVI: New Species and Taxonomic Changes in Palicourea (Palicoureeae)
Charlotte M. Taylor

• Editor: Wendy L. Applequist