The Rust Fungi (Uredinales) of Hawaii

Abstract

The fungi of Hawaii were documented by F. L. Stevens and other workers early in the 1900s. Since about 1925, however, little formal attention has been given Hawaiian rust fungi. This is the first study devoted exclusively to Hawaiian Uredinales as a group. During recent years we have contributed a number of rust specimens to the Herbarium Pacificum, Bernice P. Bishop Museum (BISH), which includes the most complete collection of Hawaiian fungi. Our contributions, together with the earlier deposits, supplemented by the Animal and Plant Health Inspection Service, U.S. Department of Agriculture, reference collection at Honolulu International Airport (HONQ) and information from the USDA National Fungus Collections (BPI), provided the basis for this study. The fungus collection of the Department of Botany, University of Hawaii at Manoa (HONO), was also examined. We recognize 74 species, 9 of which are endemic , and an additional 13 occur on native host s. As with many rusts in tropical areas , most species reported here are less than macrocyclic or are represented only by uredinial and /or telial states and do not utilize alternate hosts.