Valid publication of the family name Pteleocarpaceae R. K. Brummitt OriginalPaper 05 April 2011 Pages: 1 - 3
Summary of recent systems of angiosperm classification James L. Reveal OriginalPaper 30 April 2011 Pages: 5 - 48
A revision of the genus Medusanthera (Stemonuraceae, Icacinaceae s.l.) Timothy M. A. Utteridge OriginalPaper 11 June 2011 Pages: 49 - 81
Phylogeny and biogeography of the lamioid genus Phlomis (Lamiaceae) C. MathiesenA.-C. ScheenC. Lindqvist OriginalPaper 30 April 2011 Pages: 83 - 99
Catabrosa versus Colpodium (Poaceae: Poeae) in southern Africa, with a key to these genera and their species in Africa Robert J. SorengLyn Fish OriginalPaper 24 May 2011 Pages: 101 - 110
Four new species of Aloe (Aloaceae) from Ethiopia, with notes on the ethics of describing new taxa from foreign countries Sebsebe DemissewIb FriisInger Nordal OriginalPaper 10 May 2011 Pages: 111 - 121
Four new species of Anthurium (Araceae) from Bahia, Brazil A. HaighS. J. MayoM. A. Nadruz Coelho OriginalPaper 08 June 2011 Pages: 123 - 132
Baccharis sphagnophila, a new species of Baccharis sect. Caulopterae (Compositae: Astereae) from the highlands of Southern Brazil Angelo Alberto SchneiderGustavo HeidenIlsi Iob Boldrini OriginalPaper 10 June 2011 Pages: 133 - 135
Two new species of Marsdenia R. Br. (Apocynaceae: Asclepiadoideae) from the semi-arid region of Brazil Alessandro RapiniJorge Fontella Pereira OriginalPaper 04 May 2011 Pages: 137 - 142
Kerianthera longiflora (Rubiaceae), a remarkable new species from eastern Brazil, with some observations on K. preclara Caetano Troncoso OliveiraLeandro L. GiacominDaniela C. Zappi OriginalPaper 30 April 2011 Pages: 143 - 148
Passiflora cristalina, a striking new species of Passiflora (Passifloraceae) from Mato Grosso, Brazil John VanderplankDaniela Zappi OriginalPaper 29 April 2011 Pages: 149 - 153
Zeuxine strateumatica (Orchidaceae) goes south: a first record for Brazil Luiz Menini NetoMarcelo Rodrigues MirandaDavid Cruz OriginalPaper 08 June 2011 Pages: 155 - 158
Lectotypifications in Pseudolaelia (Laeliinae: Orchidaceae) Luiz Menini NetoRafaela Campostrini ForzzaCassio van den Berg OriginalPaper 28 May 2011 Pages: 159 - 161
Microlicia hirticalyx (Melastomataceae): a new name for Microlicia acuminata Cogn. R. RomeroE. M. Woodgyer OriginalPaper 30 April 2011 Pages: 163 - 165
Typification and synonymy of Meriania species (Merianieae – Melastomataceae) from Brazil Berenice ChiavegattoJosé Fernando Andrade Baumgratz ReviewPaper 21 January 2011 Pages: 167 - 169
Hyptis maya, a new species of Lamiaceae from Belize, Central America, and the closely related H. lanceolata Raymond M. Harley OriginalPaper 16 April 2011 Pages: 171 - 174
Vernonia bayensis (Asteraceae/Compositae), a new species from Somalia and a key to the Somali species of Vernonia Mats ThulinHenk Beentje OriginalPaper 19 April 2011 Pages: 175 - 178
Vernonia excelsa (Compositae), a new liana from Central Africa, and notes on related species Carel C. H. Jongkind OriginalPaper 15 June 2011 Pages: 179 - 182
A new endemic species of Pandanaceae from India: Pandanus palakkadensis A. B. NadafR. L. ZananK. V. Wakte OriginalPaper 28 May 2011 Pages: 183 - 186
Impatiens kunyitensis (Balsaminaceae), a new species from Sumatra, Indonesia Nanda Utami OriginalPaper 10 June 2011 Pages: 187 - 190
Alexander von Humboldt’s fungal collections at Kew Peter Roberts OriginalPaper 15 June 2011 Pages: 191 - 194