Abstracts received so far:

1. Biosystematic investigation of the rare, disjunct, rockhouse fern Thelypteris pilosa var. alabamensis (Thelypteridaceae: Stegnogramma). - WATKINS, JR., JAMES E.* AND DONALD R. FARRAR.
2. Evolutionary relationships and biogeography of Isoetesbased on nucleotide sequences. - TAYLOR, W. CARL* AND SARA B. HOOT.
3. Genus Botrychium (Ophioglossaceae) in the interior of Alaska – Herb Wagner’s final conquest, The. - GRANT, JASON R.
4. Has ecological specialization driven a fundamental phylogenetic split in the Polypodiales? - CRANFILL, RAYMOND.
5. Hybridization and putative allotetraploid speciation in Selaginella subg. Tetragonostachys. - THERRIEN, JAMES P.*, MICHAEL D. WINDHAM, AND CHRISTOPHER H. HAUFLER.
6. Isoetes minima A.A. Eaton (Isoetaceae) - an overlooked terrestrial quillwort of the Pacific Northwest. - CESKA, ADOLF* AND OLDRISKA CESKA.
7. Microhabitat preferences of trunk epiphytes in a cloud forest of Mexico, with special reference to ferns. - MEHLTRETER, KLAUS*, JOSé G. GARCíA-FRANCO, AND ALEJANDRO FLORES-PALACIOS.
8. Morphological differentiation through differential gene silencing in the allotetraploid derivatives of Botrychium lunaria X B. lanceolatum-a partial confirmation of the hypothesis of Werth and Windham. - FARRAR, DONALD R.* AND JAMES E. WATKINS.
9. New Combination of the Ophioglossaceae Using Palynological and Morphological Studies on the Old World, A. - SAHASHI, NORIO.
10. New insights concerning the origin of Polypodium scouleri and its ongoing hybridization with sympatric congeners. - HAUFLER, C. H.1*, T. HILDEBRAND1, P. HAMMOND2, J. P. THERRIEN1, AND C. WALTERS1.
11. Ophioglossaceae of British Columbia, The. - WILLISTON, PATRICK* AND PAULA BARTEMUCCI.
12. Phenological studies on Acrostichum danaeifolium Langsd. et Fisch. (Pteridaceae, Pteridophyta) on a Caribbean mangrove site of Mexico. - MEHLTRETER, KLAUS1* AND MóNICA2 PALACIOS-RIOS.
13. Phylogeny and biogeography of Selaginella subg. Tetragonostachys based on nuclear ribosomal ITS sequence data. - THERRIEN, JAMES P.* AND CHRISTOPHER H. HAUFLER.
14. Phylogeny of Grammitidaceae and Polypodiaceae inferred from two large data sets: rbcL and morphology. - SMITH, ALAN R.*, HARALD SCHNEIDER, BARBARA S. PARRIS, CHRISTOPHER H. HAUFLER, TOM A. RANKER, JAMES P. THERRIEN, AND JENNIFER OTT-GEIGER.
15. Phylogeny of Selaginellaceae based on the plastid gene rbcL: congruence and incongruence with morphology. - KORALL, PETRA* AND PAUL KENRICK.
16. Population genetics of Sadleria cyatheoides (Blechnaceae), a Hawaiian endemic. - HOUSTON, HEATHER J.* AND TOM A. RANKER.
17. Recent radiation of Neotropical fern genera in p‡ramo ecosystems, A. - S‡NCHEZ-BARACALDO, PATRICIA.
18. Species delimitation and hybrid origins in North American Isoëtes based on LEAFY intron data. - HOOT, SARA B.*, W. CARL TAYLOR, AND E. WAGNER.
19. Sperm longevity and swimming distance in ferns. - NOTIS, CHRISTINE.
20. Ultrastructure of the spermatozoid of Diphasiastrum digitatum. - SCHUETTE, S.W.*, A.R. MADEN, D.P. WHITTIER, AND K.S. RENZAGLIA.