Nomenclature and typification of J.G.C. Lehmann and H. Buck names in Lobostemon (Boraginaceae), with enquiries into the contributions by O. Swartz and CP. Thunberg

摘要

J.G.C. Lehmann and H. Buek described 18 species of Lobostemon Lehm., in addition to making new combinations of taxa previously placed in Echium L. Some of Lehmann's Echium taxa were supplied by Olof Swartz in Stockholm who also provided Thunberg withthe same material. This led to more or less simultaneous publication of some homonyms in Echium by Lehmann and Thunberg. Previous confusions on publication dates of Thunberg and Lehmann names are clarified. Author citations and priority of homonyms ascribed to Thunberg, Swartz and Lehmann are rectified. Many types are identified, including 17 new lectotypes (MEL, S, SAM, SET, UPS) and one neotype. The role of Sonder in selling material to S while breaking off bits and pieces and supplying his friend Baron F. von Mueller in MEL is also investigated and the presence of Lehmann's hand on a SAM specimen is reported on.