AN ANNOTATED CATALOGUE OF TYPE SPECIMENS IN THE UNIVERSITY OF ILLINOIS HERBARIUM (ILL)--1. PIPERACEAE, EXCEPT PEPEROMIA Almut G. Jones Plant Biology, University of Illinois, 289 Morrill Hall, 505 S. Goodwin, Urbana, IL 61801. LNTRODUCTION Type specimens in the University of Illinois Herbarium would be of a comparatively modest number, were it not for a concentration in those genera that were studied and revised by the prolific namers of plants, William Trelease and Truman G. Yuncker. By far the largest holdings of type material are to be found in the Piperaceae. Trelease, Professor of Botany at the University of Illinois from 1912 to 1926, had become interested in Piperaceae after the death of Casimir de Candolle in 1917. Aside from many papers and contributions describing new species, he authored treatments of this family for Cuba (1926), Costa Rica (1929), Panama (1927, 1938, 19A0) , and Peru (1936). Notable among his taxonomic revisions is that of the genus Ottonia (1935). Trelease continued his studies in Piperaceae until his death in 1945, leaving a considerable amount of unpublished material. Yuncker, who had previously collaborated with Trelease and published a number of his "new species" [e.g., in contributions to the Flora of Honduras (Yuncker 1938, 1940)], agreed to complete at least some of the unfinished work and was given an appointment as a visiting research professor at the University of Illinois for the academic year 1946/1947. During this time he completed the two-volume work The Piperaceae of northern South America (Trelease & Yuncker 1950) . Yuncker continued his work in the Piperaceae, contributing, among others, treatments of this family for Panama (1950), Trinidad and Tobago (1953), Argentina, Bolivia and Chile (1955), Suriname (1957), Jamaica (1960), and Brazil (1972, 1973). The following annotated catalogue includes all names (basio-nyms) of members of Piperaceae, for which type material (including paratypes) is located at ILL, except Peperomia , which will be published separately. Generic names involved are: Anderssoniopiper Trel., Artanthe Miq., Enckea Kunth, Ottonia Sprengel, Peltobryon Klotzsch ex Miq., Piper L., Pothomorphe Miq., Sarcorhachis Trel., Schillera Kunth, and Trianaeopiper Trel. Whenever necessary, as well as feasible, I have designated lectotypes. The entries concerned are marked with an asterisk in
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