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

CONTENTS OF NOVON 19(3)

A New Species of Cyanus (Asteraceae, Centaureinae) from Southeastern Bulgaria. Svetlana Bancheva & Stoyan Stoyanov

Psychotria perotensis (Rubiaceae, Psychotrieae), a New Species from the Montane Cloud Forest in Veracruz, Mexico. Gonzalo Castillo-Campos, Klaus Mehltreter, José G. García-Franco & Maria Luisa Martínez

A New Variety of Salvia sericeotomentosa (Lamiaceae) from South Anatolia, Turkey. Ferhat Celep, Musa Doğan, Safi Bagherpour & Ahmet Kahraman

Taxonomic Notes on Chinese Saussurea (Asteraceae, Cardueae). Chen You-sheng

Novae Gesneriaceae Neotropicarum XVI: Pearcea pileifolia, a New Species of Gesneriaceae from South America. John Littner Clark & Laurence E. Skog

Melaleuca(Myrtaceae) from Australia. Lyn A. Craven

Quassia arnhemensis, a New Species of Simaroubaceae from Australia . Lyn A. Craven & Clyde R. Dunlop

A New Species of Viola (Violaceae) from Guangdong, China. Dong Anqiang, Zhou Jinsong, Gong Qin & Xing Fuwu

Stylosanthes quintanarooensis (Leguminosae, Papilionoideae), Una Nueva Especie del Sureste de México. Susana Gama-López & Patricia Dávila

Two New Trifoliolate-Leaved Species of Cucurbitaceae (Cucurbiteae) from Central and South America. Michael H. Grayum

Hoya persicinicoronaria (Apocynaceae, Asclepiadoideae), a New Species from Hainan, China. Shao-yun He, Ping-tao Li, Jia-yi Lin & Yang Xiang-hui

Gonolobus spiranthus (Apocynaceae, Asclepiadoideae), una Nueva Especie de la Vertiente del Pacifico Mexicano. Verónica Juárez Jaimes, W. D. Stevens & Lucio Lozada Pérez

Estudios en las Apocynaceae Neotropicales XXXV: Una Nueva Especie de Lacmellea (Apocynaceae, Rauvolfioideae) para Colombia. J. Francisco Morales

A New Species of Taxiphyllum (Musci: Hypnaceae) from Sri Lanka. Ryszard Ochyra & Robert R. Ireland

Validation of the Hybrid Flowering Cherry Prunus ×incam (Rosaceae). Richard T. Olsen & Alan T. Whittemore

Alyssum misirdalianum (Brassicaceae), a New Species from Southern Turkey. Nermin Orcan & Rıza Binzet

Two New Species of Stylogyne (Myrsinaceae) from Brazil. Jon M. Ricketson & John J. Pipoly III

New Species of Lachemilla (Rosaceae) from South America. Katya Romoleroux

A New Species of Catolesia (Asteraceae, Eupatorieae) from Bahia, Brazil. Nádia Roque, Abel A. Conceição & Harold Robinson

Eleocharis gonzaleziae (Cyperaceae), a New Species from Northern Mexico. David J. Rosen

Ruellia saccata, a New Species of Acanthaceae from Bolivia. Alexander N. Schmidt-Lebuhn & Erin A. Tripp

La Sect. Obtusifolii del Género Lonchocarpus (Leguminosae, Papilionoideae, Millettieae) para Mesoamérica. Mario Sousa S.

Eight New Species of Lauraceae from Ecuador, Peru, and Panama. Henk van der Werff

Sorocea carautana (Moraceae): A New Species from Southeastern Brazil. M. D. M. Vianna Filho, T. T. Carrijo & S. Romaniuc Neto

A New Hysteranthous Species of Chelonopsis (Lamiaceae) from Southwest China. Caroline S. Weckerle, Franz K. Huber & Yang Yongping

Chiritopsis jingxiensis, a New Species of Gesneriaceae from a Karst Cave in Guangxi, China. Wei-bin Xu, Yan Liu & Hai-shan Gao

Impatiens cornutisepala (Balsaminaceae), a New Species from Guangxi, China. Sheng-xiang Yu, Xiu-ren Zhou, Yi-ling Chen & Hai-ning Qin

A New Species of Epimedium (Berberidaceae) from Hubei, China. Zhang Yan-Jun & Li Jian-Qiang