A synopsis of Costa Rican Ruellia (Acanthaceae), with descriptions of four new species Lucinda A. McDadeErin A. Tripp Taxonomy Pages: 199 - 216
Tolmiea diplomenziesii: A new species from the Pacific Northwest and the diploid sister taxon of the autotetraploid T. menziesii (Saxifragaceae) Walter S. JuddDouglas E. SoltisGretchen Ionta Taxonomy Pages: 217 - 225
A new species of Dolichoura (Melastomataceae) and broadened circumscription of the genus Renato GoldenbergRafael dos Anjos Mendes Tavares Taxonomy Pages: 226 - 232
Symplocos saxatilis (Symplocaceae), a new dioecious species from Serra do Cipó, Minas Gerais, Brazil João Luiz M. Aranha FilhoPeter W. FritschAngela B. Martins Taxonomy Pages: 233 - 237
A new species of Malaxis (Orchidaceae) from Guerrero, Mexico Gerardo A. SalazarRicardo de Santiago Taxonomy Pages: 238 - 242
Listera fugongensis (Orchidaceae), a new species from Yunnan, China Jin XiaoHuaLi Heng Taxonomy Pages: 243 - 244
Studies in the Capparaceae XXX: Capparicordis, a new genus from the neotropics Hugh H. IltisXavier Cornejo Taxonomy Pages: 245 - 254
Systematics of North American Froelichia (Amaranthaceae subfam. Gomphrenoideae) I: Identification of consistent morphological variation and segregation of species complexes Ross A. McCauleyHarvey E. Ballard Taxonomy Pages: 255 - 274
Systematics of North American Froelichia (Amaranthaceae subfam. Gomphrenoideae) II: Phylogeny and biogeographic speciation patterns inferred from nrITS sequence data Ross A. McCauleyHarvey E. Ballard Phylogenetics Pages: 275 - 289
New chromosome counts and evidence of polyploidy in Haageocereus and related genera in tribe Trichocereeae and other tribes of Cactaceae Mónica ArakakiDouglas E. SoltisPablo Speranza Cytology Pages: 290 - 297
Stapeliads of Southern Africa and Madagascar. By P. V. Bruyns Carlo A. Balistrieri Book Review Pages: 298 - 299
