1. Do pollinators determine hybridization patterns in sympatricSatyrium (Orchidaceae) species?

   • A. G. Ellis
   • S. D. Johnson

   OriginalPaper Pages: 137 - 150

2. Evolutionary change in seed size among some legume species: The effects of phylogeny

   • Hyesoon Kang
   • Richard B. Primack

   OriginalPaper Pages: 151 - 164

3. Polyploid speciation inHedera (Araliaceae): Phylogenetic and biogeographic insights based on chromosome counts and ITS sequences

   • Pablo Vargas
   • Hugh A. McAllister
   • Mike J. Wilkinson

   OriginalPaper Pages: 165 - 179

4. Morphological evolution and ecological diversification of the forest-dwelling poppies (Papaveraceae: Chelidonioideae) as deduced from a molecular phylogeny of the ITS region

   • Frank R. Blattner
   • Joachim W. Kadereit

   OriginalPaper Pages: 181 - 197

5. DNA sequence data reveal polyphyly of Brexioideae (Brexiaceae; Saxifragaceae sensu lato)

   • Jason A. Koontz
   • Douglas E. Soltis

   OriginalPaper Pages: 199 - 208

6. Chloroplast DNA restriction site data support a narrowed interpretation ofEupatorium (Asteraceae)

   • Edward E. Schilling
   • Jose L. Panero
   • Patricia B. Cox

   OriginalPaper Pages: 209 - 223

7. Reproductive conflicts ofPalicourea padifolia (Rubiaceae) a distylous shrub of a tropical cloud forest in Mexico

   • Paola Sabina Contreras
   • Juan Francisco Ornelas

   OriginalPaper Pages: 225 - 241

8. Homeosis, morphogenetic gradient and the determination of floral identity in the inflorescences ofPhilodendron solimoesense (Araceae)

   • Denis Barabé
   • Christian Lacroix

   OriginalPaper Pages: 243 - 261

9. Phylogenetic relationships of the enigmatic fern families Hymenophyllopsidaceae and Lophosoriaceae: Evidence fromrbcL nucleotide sequences

   • Paul G. Wolf
   • Sedonia D. Sipes
   • Kunihiko Ueda

   OriginalPaper Pages: 263 - 270