Foreword: A Festschrift on the occasion of Dennis Wm. Stevenson’s 70th birthday Barbara A. AmbroseKenneth G. KarolFabián A. Michelangeli OriginalPaper 17 October 2012 Pages: 307 - 309
Rescuing Robert Brown—The Origins of Angio-Ovuly in Seed Cones of Conifers P. B. Tomlinson OriginalPaper 13 November 2012 Pages: 310 - 334
A New Zamia Species from the Panama Canal Area Alberto Sidney Taylor BlakeGregory Holzman OriginalPaper 10 October 2012 Pages: 335 - 344
The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms Peter K. Endress OriginalPaper 10 October 2012 Pages: 345 - 397
Systematic Placement of Dasypogonaceae Among Commelinid Monocots: Evidence from Flowers and Fruits Paula J. RudallJohn G. Conran OriginalPaper 10 October 2012 Pages: 398 - 415
Floral Morphology and Organogenesis in Tinantia pringlei, Along with a Review of Floral Developmental Variation in the Spiderwort Family, Commelinaceae Christopher R. HardyJason Ryndock OriginalPaper 10 October 2012 Pages: 416 - 427
Pollen Morphology of Xyridaceae Systematic (Poales) and its Potential Lisa M. Campbell OriginalPaper 10 October 2012 Pages: 428 - 439
Homoplasy, Pollination, and Emerging Complexity During the Evolution of Floral Development in the Tropical Gingers (Zingiberales) Chelsea D. SpechtRoxana YocktengW. John Kress OriginalPaper 18 December 2012 Pages: 440 - 462
Leaf Development, Metamorphic Heteroblasty and Heterophylly in Berberis s. l. (Berberidaceae) Natalia Pabón-MoraFavio González OriginalPaper 10 October 2012 Pages: 463 - 489