1. Jodrell Laboratory; Royal Botanic Gardens; Richmond, Surrey Kew TW9 3DS U.K.
2. Royal Botanic Garden; Inverleith Row; Edinburgh EH3 5LR U.K.
3. Departamento de Ciências Biológicas-DCBIO; Universidade Estadual de Feira de Santana-UEFS; BR116 Km3 Campus Universitário Feira de Santana - BA CEP 44031-460 Brazil
4. Departamento de Ciencias Biológicas; Universidad de los Andes; Apartado Aéreo 4976 Bogotá, D.C. Colombia
5. The Natural History Museum of Denmark; Sølvgade 83, Opg. S Copenhagen K 1307 Denmark
6. The Lewis B. and Dorothy Cullman Program for Molecular Systematics Studies; The New York Botanical Garden, Bronx New York 10458-5126 U.S.A.
7. Department of Botany; The Natural History Museum; Cromwell Road London SW7 5BD U.K.
8. Bolus Herbarium, Department of Botany; University of Cape Town; Rondebosch 7701 South Africa
9. Leslie Hill Molecular Systematics Laboratory; Kirstenbosch Research Centre; Private Bag X7, Claremont Cape Town 7735 South Africa
10. Departamento de Botánica, Instituto de Biología; Universidad Nacional Autonóma de México; Apartado Postal 70-367 México, D.F. 04510 México
11. Division of Biology; Imperial College London and Royal Botanic Gardens, Kew; Silwood Park Campus, Ascot Berkshire SL5 7PY U.K.
12. Institute of Biological Sciences, Edward Llwyd Building; The University of Wales; Aberystwyth Ceredigion SY23 3DA U.K.