American Journal of Botany 98(2): 306–325, 2011; http://www.amjbot.org/ © 2011 Botanical Society of America morphologically heterogeneous and ecologically diverse. Growth forms include large tropical rainforest trees, temperate and high altitude tropical herbs and shrubs, and aquatic plants of swiftfl owing rivers and streams. Although their distribution is nearly cosmopolitan, their greatest s...

For co~)lr~icrlt i this es.iny o r rlisctr.siior, I-clntcd topics, I flinrik H o l r y Anrorr, Geol-gc orr 0 1 1 Al<erlo.)r, Jnr1ti.s A~l(/reorii, S tcce~l Blntt, Gnry Chol-rlec.s, Erlrlie Delcel, Petrr Din~)iorrrl, J o ~ i Elvter, Erik E y ~ t e r , Ermst Fehr. Dnuirl I . Lec i~ le . George Locice~,stcirl. Bob JlncCoirrl, Jorric.~ Alonlgo~~lery , Tni-Lorii Mrii, Ted O'Dor,ogliric. Drorcrl Prcl...

Designed to provide all those interested in Africa with quick reference and a reliable set of data to monitor development programs and aid flows in the region, this is an invaluable reference tool for analysts and policy makers who want a better understanding of the economic and social developments occurring in Africa. tBasic indicators tNational and fiscal accounts tExternal accounts and excha...

Bystropogon (Lamiaceae) is endemic to the Macaronesian Islands and represents the best-known example of a putative phytogeographic connection between these islands and the New World. Previous morphological taxonomic studies suggested that this genus is closely related to the western South American Minthostachys. Phylogenetic analyses of nucleotide sequences of the internal transcribed spacers a...