Chusquea sect. Swallenochloa (Poaceae: Bambusoideae) and allies in Brazil Lynn G. Clark Articles Pages: 387 - 422
Pereskia marcanoi, a new species of Cactaceae from Hispaniola Alberto E. Areces-Mallea Articles Pages: 423 - 428
A re-evaluation of Potentilla drummondii and P. breweri (Rosaceae), with the new species Potentilla morefieldii Barbara Ertter Articles Pages: 429 - 435
A re-evaluation of the Abutilothamnus complex (Malvaceae) I. Two new species and two new genera, Sidasodes and Akrosida Paul A. FryxellJavier Fuertes Articles Pages: 436 - 447
Sphagna of the 1979 Projeto Flora Amazônica expedition Howard CrumWilliam R. Buck Articles Pages: 448 - 460
A taxonomic reconsideration of Salix taxifolia sensu lato (Salicaceae) George W. ArgusCheryl L. McJannet Articles Pages: 461 - 474
Novae Gesneriaceae Neotropicarum IV: Alloplectus purpureus and Columnea nematoloba—New Gesneriaceae from northwestern South America Lars P. KvistLaurence E. Skog Articles Pages: 475 - 480
A few varietal combinations in Californian Keckiella and Penstemon (Scrophulariaceae) Noel H. Holmgren Articles Pages: 481 - 482
Hallucinogenic plants of the Shuar and related indigenous groups in Amazonian Ecuador and Peru Bradley C. Bennett Articles Pages: 483 - 493
Glandularia X hybrida (Verbenaceae), a new combination for a common horticultural plant John F. PruskiGuy L. Nesom Articles Pages: 494 - 496