References : Print: Bailey, L.H. (1949) Manual of Cultivated Plants. Britten, James and G.S. Boulger (1893) A Biographical Index of British and Irish Botanists. Brummitt, R.K. and C.E. Powell (1992) Authors of Plant Names. Clifford, H. Trevor and Peter T. Bostock (2007) Etymological Dictionary of Grasses. Coombs, Allen J. (1994) Dictionary of Plant Names. Desmond, Ray (1994) Dictionary of British and Irish Botanists and Horticulturists. Eggli, Urs and Leonard Newton (2004) Etymological Dictionary of Succulent Plant Names. Germishuizen, G. and N.L. Meyer (Eds.) (2003) Plants of Southern Africa: An Annotated Checklist. Gledhill, David (2002) The Names of Plants. Glen, Hugh (2004) The Meanings of the Names of Trees. Gunn, Mary and L.E. Codd (1985) "Additional Biographical Notes on Plant Collectors in Southern Africa." Bothalia 15:631-654. Gunn, Mary and L.E. Codd (1981) Botanical Exploration of Southern Africa. Jackson, W. P. U. (1990) Origins and Meanings of Names of South African Plant Genera. Kesting, Deon and Hugh Clarke (2008) Botanical Names What Do They Mean. Quattrocchi, Umberto (2006) CRC World Dictionary of Grasses. Quattrocchi, Umberto (1999) CRC World Dictionary of Plant Names. Schmidt, Ernst et. al. Trees and Shrubs of Mpumalanga and Kruger National Park (2002) Stearn, William T. (1997) Stearn's Dictionary of Plant Names. Internet: African Flowering Plants Database All You Want To Know About Haworthias and Gasterias Aluka/African Plants Australian Plant Collectors and Illustrators Flora of Zimbabwe Harvard University Herbarium Index of Botanists International Plant Names Index List of South African Botanical Authors. PlantzAfrica POSA Checklist of Southern African Plants Protea Atlas Project/Red Data List of Southern African Plants Some Biogeographers, Evolutionists and Ecologists: Chrono-Biographical Sketches Swaziland's Flora Database Tropicos