A new species and a new combination of Allium sect. Rhizirideum (Alliaceae) from northeastern China and Korea Hyeok-Jae ChoiByoung-Un Oh OriginalPaper 17 September 2010 Pages: 199 - 205
Croton limae (Euphorbiaceae), a new species of section Argyroglossum from northeastern Brazil Ana Paula Souza GomesMargareth Ferreira de SalesPaul E. Berry OriginalPaper 17 September 2010 Pages: 206 - 209
Calycogonium bairdianum (Melastomataceae: Miconieae), a new species from the Cordillera Central, Dominican Republic James D. Skean Jr.Walter S. JuddBrígido Peguero OriginalPaper 17 September 2010 Pages: 210 - 214
A new dwarf shrubby species of Baccharis subg. Baccharis (Asteraceae, Astereae) from southeastern Brazil Gustavo HeidenLeonardo Dias Meireles OriginalPaper 17 September 2010 Pages: 215 - 218
A new species of Dalea sect. Parosela (Leguminosae: Papilionoideae: Amorpheae) from Guerrero, Mexico A. Eduardo Estrada C.José A. Villarreal Q. OriginalPaper 17 September 2010 Pages: 219 - 221
Notes on Swartzia (Leguminosae) in Central America preliminary to the Flora Mesoamericana, with descriptions of two new species from Costa Rica Benjamin M. TorkeNelson A. Zamora OriginalPaper 17 September 2010 Pages: 222 - 232
Eleocharis cryptica (Cyperaceae), a dwarf new species from Durango, Mexico Jeffery M. SaarelaPaul M. PetersonDavid J. Rosen OriginalPaper 17 September 2010 Pages: 233 - 238
A new combination in the genus Oxyrhynchus (Leguminosae: Phaseolinae) Alfonso Delgado-SalinasA. Eduardo Estrada C. OriginalPaper 17 September 2010 Pages: 239 - 242
New combinations and typifications in Bistorta, Persicaria, Polygonum, and Rumex (Polygonaceae) James L. RevealDaniel E. Atha OriginalPaper 17 September 2010 Pages: 243 - 263
New combinations and lectotypifications of North American taxa in Caryophyllaceae, Chenopodiaceae, Fumariaceae, Montiaceae, Papaveraceae, and Ranunculaceae Noel H. HolmgrenPatricia K. Holmgren OriginalPaper 17 September 2010 Pages: 264 - 266
Notes on Lepraria s.l. (Lecanoromycetes, Ascomycota) in North America: New species, new reports, and preliminary keys James C. Lendemer OriginalPaper 17 September 2010 Pages: 267 - 292
Coccocarpia tomentosa, una nueva especie de Argentina (Ascomycetes liquenizados, Peltigerales, Coccocarpiaceae) Lidia Itatí FerraroAndré Aptroot OriginalPaper 17 September 2010 Pages: 293 - 299