A new species of Mentzelia section Bartonia (Loasaceae) from the Grand Canyon, Arizona John J. SchenkWendy HodgsonLarry Hufford OriginalPaper 14 March 2010 Pages: 1 - 6
Pentagonia lanciloba, a new species of Rubiaceae (Hippotideae) from northwestern Ecuador Xavier Cornejo OriginalPaper 14 March 2010 Pages: 7 - 11
Nuevos taxones para el género Schizachyrium (Poaceae: Andropogoneae) del Noroeste de la Argentina y Bolivia Myriam Carolina PeichotoAntenor Alfredo SulekicZulma Esther Rúgolo de Agrasar OriginalPaper 14 March 2010 Pages: 12 - 19
Two new species of Leptolobium (Leguminosae, Papilionoideae) from Brazil Rodrigo Schütz RodriguesAna Maria Goulart de Azevedo Tozzi OriginalPaper 14 March 2010 Pages: 20 - 25
New species of Chalybea and Huilaea (Melastomataceae) María Eugenia Morales-PuentesDarin S. Penneys OriginalPaper 14 March 2010 Pages: 26 - 34
Actinocephalus verae (Eriocaulaceae), a new species from the Brazilian Campos Rupestres Marcelo TrovóPaulo Takeo Sano OriginalPaper 14 March 2010 Pages: 35 - 38
New species of Ericaceae (Vaccinieae) from the Andes of Bolivia and Peru Paola Pedraza-PeñalosaJames L. Luteyn OriginalPaper 14 March 2010 Pages: 39 - 56
Taxonomy, distribution and new taxa from the Habenaria crucifera (section Nudae, Orchidaceae) aggregate from Brazil and the Guianas João A. N. BatistaLuciano de Bem Bianchetti OriginalPaper 14 March 2010 Pages: 57 - 79
A new species of Zamia from Chocó, Colombia (Cycadales, Zamiaceae) Michael CalonjeDennis StevensonAnders Lindstrom OriginalPaper 14 March 2010 Pages: 80 - 85
Three new species of Ocotea (Lauraceae) from the campos rupestres of Brazil Leandro C. S. AssisRenato de Mello-Silva OriginalPaper 14 March 2010 Pages: 86 - 94
Neochamberlainia, a new name for Chamberlainia Artabe, Zamuner & D. W. Stev. (Zamiaceae) non Chamberlainia Grout (Brachytheciaceae) Analia ArtabeAlba B. ZamunerDennis W. Stevenson OriginalPaper 14 March 2010 Pages: 95 - 95
Rhynchospora galeana, a new name for Rhynchospora breviseta (Gale) Channell (Cyperaceae) Robert F. C. NacziWesley M. KnappGerry Moore OriginalPaper 14 March 2010 Pages: 96 - 97
