1. New Editoral policies/Call for manuscripts

   Letter from The Editors Pages: ii - ii

2. Lawrence memorial award — 2004 recipient and 2005 nominations

   Announcement Pages: ii - ii

3. Taxonomy of the Polygonum douglasii (Polygonaceae) complex with a new species from Oregon

   • Mihai Costea
   • François J. Tardif

   Taxonomy Pages: 1 - 27

4. Synonymy of Hortia arborea with H. brasiliana (Rutaceae) and a new species from Brazil

   • Milton Groppo
   • Jacquelyn A. Kallunki
   • José R. Pirani

   Taxonomy Pages: 28 - 34

5. A new species of Tzeltalia (Solanaceae) from Mexico

   • Mahinda Martínez
   • Ofelia Vargas

   Taxonomy Pages: 35 - 38

6. A new species of Columnea and range extension in the Gesneriaceae from Costa Rica

   • Ricardo Kriebel

   Taxonomy Pages: 39 - 42

7. A new species of Sicyos L. (Cucurbitaceae) from Oaxaca, Mexico

   • Isela Rodríguez-Arévalo
   • Rafael Lira
   • Ismael Calzada

   Taxonomy Pages: 43 - 46

8. The resurrection of Erigeron parryi (Asteraceae)

   • Peter Lesica

   Taxonomy Pages: 47 - 54

9. A new species of Thrixspermum (Orchidaceae) from China

   • Wen-Hong Chen
   • Yu-Min Shui

   Taxonomy Pages: 55 - 58

10. Wood and bark anatomy of Muntingiaceae: A phylogenetic comparison within Malvales s. l.

    • Sherwin Carlquist

    Structural Botany Pages: 59 - 67

11. Specific epithets of the flowering plants of central French Guiana

    • Edmund F. Hecklau
    • Scott A. Mori
    • John L. Brown

    Nomenclature Pages: 68 - 87

12. Alice Northrop's type specimens for the Bahama flora

    • Lee B. Kass

    Nomenclature Pages: 88 - 101

13. Books received

    Announcement Pages: 102 - 102

14. Chisacá, Un Recorrido por los Páramos Andinos. By Paola Pedraza-Peñalosa, Julio Betancur, and Pilar Franco-Rosselli

    • Ma. Carmen Ulloa Ulloa

    Book Review Pages: 103 - 103