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 20(1)

Dubautia carrii and D. hanaulaensis, New Species of the Hawaiian Silversword Alliance (Compositae, Madiinae) from Moloka`i and Maui. Bruce G. Baldwin & Elizabeth A. Friar

Douglasia conservatorum (Primulaceae), a New Species from Idaho and Montana, U.S.A. Curtis R. Björk

Three New Species of Pseudobombax (Malvaceae, Bombacoideae) from Brazil. Jefferson Guedes de Carvalho-Sobrinho & Luciano Paganucci de Queiroz

Astragalus beitashanensis, a New Species of Leguminosae from Xinjiang, China. Chai Wei & Yan Ping

Tropidogyne, a New Genus of Early Cretaceous Eudicots (Angiospermae) from Burmese Amber. Kenton L. Chambers, George Poinar Jr. & Ron Buckley

Validation of the Name Parodia lenninghausii (Cactaceae), with a Note on the Lectotypification and Orthography of the Name. Urs Eggli & Andreas Hofacker

New Combinations in Habranthus (Amaryllidaceae) in Mexico and Southwestern U.S.A. Raymond O. Flagg, Gerald L. Smith & Alan W. Meerow

A New Species of Zornia (Leguminosae, Papilionoideae) from Northeastern Brazil. Ana Paula Fortuna-Perez & Ana Maria Goulart de Azevedo Tozzi

Taxonomy of Basicladia (Cladophorales, Chlorophyta) with Two New Combinations. David J. Garbary

Lectotypifications and a Validation in Baccharis (Asteraceae, Astereae) Names from Brazil. Gustavo Heiden, José Fernando Andrade Baumgratz & Roberto Lourenço Esteves

Brickellia jimenezii (Asteraceae, Eupatorieae), a New Species from Guerrero, Mexico. Oscar Hinojosa Espinosa & Ramiro Cruz Durán

Rosa woodsii subsp. puberulenta and variety ertterae (Rosaceae), New in Western North America. Walter H. Lewis & Barbara Ertter

A New Species of Rhodiola (Crassulaceae) from Western Sichuan, China. Tao Li & Hao Zhang

Lectotypification of Actinidia latifolia var. deliciosa (Actinidiaceae). Li Xin-wei, Shi Quan-fen & Li Jian-qiang

Heterostemma pingtaoi, a New Species (Apocynaceae, Asclepiadoideae) from Hainan, China. Jia-yi Lin, Shao-yun He, Min Li & Guoyang Lin

Nomenclatural and Taxonomical Novelties in Senecio ser. Corymbosi (Asteraceae, Senecioneae) from Southern South America. Mariana Gabriela López, Arturo Federico Wulff, Lidia Poggio & Cecilia Carmen Xifreda

Blechnum yungense (Pteridophyta, Blechnaceae), una Nueva Especie de Argentina y Bolivia. Juan Pablo Ramos Giacosa

New Species of Eleocharis subgen. Limnochloa (Cyperaceae) from the Old and New World Tropics. David J. Rosen

Una Nueva Especie de Miconia (Melastomataceae) de la Sierra Mazateca, Oaxaca, México. Jesús Ricardo de Santiago Gómez

Additions to the Knowledge of the Genus Symplocos (Symplocaceae) in Ecuador and Peru. E. Bertil Ståhl

Rubiacearum Americanarum Magna Hama Pars XXII: Notable New Species of South American Coutarea, Morinda, Patima, and Rosenbergiodendron. Charlotte M. Taylor & David H. Lorence

A New Species and Variety of Senecio (Asteraceae) from Patagonian Argentina. Roberto D. Tortosa & Adriana Bartoli

The Galápagos Endemic Darwiniothamnus alternifolius (Asteraceae, Astereae) transferred to Erigeron. Alan Tye

Gastrochilus brevifimbriatus, a New Species (Orchidaceae, Aeridinae) from Chongqing, China. Yi Si Rong, Huang Ya, Xiao Bo, Shen Ming Liang & Li Juan

A New Species of Erigeron (Asteraceae) from Sichuan, China. Zhang Zhi-Feng, Li Jie, An Jing, Wang Jian-Gang & Zhang Hao