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

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Abstract:

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 with the 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, SBT, 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.

Keywords: BORAGINACEAE; C.P. THUNBERG; ECHIUM; H. BUEK; HERBARIUM MEL; HERBARIUM S; HERBARIUM SAM; HERBARIUM UPS; J.G.C. LEHMANN; LOBOSTEMON; NOMENCLATURE; O. SWARTZ; O.W. SONDER; TYPIFICATION

Document Type: Research Article

Affiliations: 1: Compton Herbarium, South African National Biodiversity Institute, Kirstenbosch, Private Bag X7, Claremont 7735 and Department of Botany and Zoology, University of Stellenbosch, South Africa;, Email: buys@sanbi.org 2: Department of Phanerogamic Botany, Swedish Museum of Natural History, P.O. Box 50007, 104 05 Stockholm, Sweden

Publication date: May 1, 2009

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