Legitimate pollination of the tristylous flowers ofEichhornia azurea (Pontederiaceae) byAncyloscelis gigas bees (Anthophoridae, Apoidea) I. Alves Dos SantosD. Wittmann OriginalPaper Pages: 127 - 137
Systematic root anatomy of Asparagales and other monocotyledons F. KauffP. J. RudallJ. G. Conran OriginalPaper Pages: 139 - 154
The evolution of pollen heteromorphism inViola: A phylogenetic approach S. NadotH. E. Ballard JrI. Dajoz OriginalPaper Pages: 155 - 171
Local evolution of obligate autogamy inEpipactis helleborine subsp.neerlandica (Orchidaceae) H. Æ. PedersenB. K. Ehlers OriginalPaper Pages: 173 - 183
The natural delimitation ofCentaurea (Asteraceae: Cardueae): ITS sequence analysis of theCentaurea jacea group N. Garcia-JacasA. SusannaR. Ilarslan OriginalPaper Pages: 185 - 199
Suitability of AFLP markers for the study of genomic relationships within theOxalis tuberosa alliance D. S. TostoH. E. Hopp OriginalPaper Pages: 201 - 209
Heterostyly in the Lamiaceae: The case ofSalvia brandegeei S. C. H. BarrettD. H. WilkenW. W. Cole OriginalPaper Pages: 211 - 219
The pollination ofStenorrhynchos lanceolatus (Aublet) L. C. Rich. (Orchidaceae: Spiranthinae) by hummingbirds in southeastern Brazil R. B. SingerM. Sazima OriginalPaper Pages: 221 - 227
Implications of morphological phylogenetics for the placement of the generaAdenocaulon andEriachaenium (Asteraceae) L. Katinas OriginalPaper Pages: 229 - 250
Cleistogamy inCentaurea melitensis (Asteraceae): Capitulum variability and spatio-temporal development patterns R. PorrasJ. M. Muñoz OriginalPaper Pages: 251 - 262