1. Chusquea sect. Swallenochloa (Poaceae: Bambusoideae) and allies in Brazil

   • Lynn G. Clark

   Articles Pages: 387 - 422

2. Correction

   • Dennis WM. Stevenson

   Erratum Pages: 422 - 422

3. Pereskia marcanoi, a new species of Cactaceae from Hispaniola

   • Alberto E. Areces-Mallea

   Articles Pages: 423 - 428

4. The 1992 Jesse M. Greenman Award

   Announcement Pages: 428 - 428

5. A re-evaluation of Potentilla drummondii and P. breweri (Rosaceae), with the new species Potentilla morefieldii

   • Barbara Ertter

   Articles Pages: 429 - 435

6. The 1992 Lawrence Memorial Award

   Announcement Pages: 435 - 435

7. A re-evaluation of the Abutilothamnus complex (Malvaceae) I. Two new species and two new genera, Sidasodes and Akrosida

   • Paul A. Fryxell
   • Javier Fuertes

   Articles Pages: 436 - 447

8. Sphagna of the 1979 Projeto Flora Amazônica expedition

   • Howard Crum
   • William R. Buck

   Articles Pages: 448 - 460

9. A taxonomic reconsideration of Salix taxifolia sensu lato (Salicaceae)

   • George W. Argus
   • Cheryl L. McJannet

   Articles Pages: 461 - 474

10. Books received

    Announcement Pages: 474 - 474

11. Novae Gesneriaceae Neotropicarum IV: Alloplectus purpureus and Columnea nematoloba—New Gesneriaceae from northwestern South America

    • Lars P. Kvist
    • Laurence E. Skog

    Articles Pages: 475 - 480

12. A few varietal combinations in Californian Keckiella and Penstemon (Scrophulariaceae)

    • Noel H. Holmgren

    Articles Pages: 481 - 482

13. Hallucinogenic plants of the Shuar and related indigenous groups in Amazonian Ecuador and Peru

    • Bradley C. Bennett

    Articles Pages: 483 - 493

14. Glandularia X hybrida (Verbenaceae), a new combination for a common horticultural plant

    • John F. Pruski
    • Guy L. Nesom

    Articles Pages: 494 - 496

15. Book reviews

    • Barbara Meurer-Grimes
    • Dora Galitzki

    BookReview Pages: 497 - 498