1. Thirteen new species and two new combinations of Stevia (Asteraceae: Eupatorieae) from Mexico

   • Akiko Soejima
   • Tetsukazu Yahara
   • Kuniaki Watanabe

   Articles Pages: 377 - 395

2. Notes on some South American species of Psychotria subgenus Heteropsychotria (Rubiaceae), with observations on rubiaceous taxonomic characters

   • Piero G. Delprete

   Articles Pages: 396 - 404

3. Novelties in Mascagnia (Malpighiaceae)

   • Christiane Anderson

   Articles Pages: 405 - 415

4. Six new species ofAcourtia (Asteraceae) and a historical account ofAcourtia mexicana

   • Leticia Cabrera R.

   Articles Pages: 416 - 429

5. A new species of Chiliotrichiopsis (Asteraceae: Astereae) from Peru

   • Guy L. Nesom
   • Harold Robinson
   • Arturo Granda Paucar

   Articles Pages: 430 - 434

6. Estimates of the number of mounted pteridophyte specimens in six major herbaria in the United States

   • Robbin C. Moran

   Articles Pages: 435 - 436

7. Two new species and two new combinations in Mesoamerican Ericaceae

   • James L. Luteyn

   Articles Pages: 437 - 446

8. Chloroplast DNA variation of Panax (Araliaceae) in Nepal and its taxonomic implications

   • Ki-oug Yoo
   • Kuber J. Malla
   • Jun Wen

   Articles Pages: 447 - 453

9. A synopsis of theMaxillaria rufescens complex in Mexico, Central America, and the Greater Antilles

   • Germán Carnevali Fernández-Concha
   • José Luis Tapia Muñoz
   • Mauro Gómez-Juárez

   Articles Pages: 454 - 465

10. A systematic histological study of palm fruits. IV. Subtribe Oncospermatinae (Arecaceae)

    • Frederick B. Essig
    • Lisa Bussard
    • Nicole Hernandez

    Articles Pages: 466 - 471

11. A new species of Banara (Flacourtiaceae) from Bolivia

    • Michael Nee

    Articles Pages: 472 - 475