Publications

Publications serve as the concrete art form for the scientist. It is his modus operandi. Authorship is akin to success and achievement. It cannot and should not deteriorate into a bargaining tool or commodity. Dardik
Viljoen, A.M., Van Wyk, B-E., van Heerden, F.R. 2002. The chemotaxonomic value of the diglucoside anthrone homonataloside B in the genus Aloe. Biochemical Systematics and Ecology 30: 35–43.

The chemotaxonomic value of the only known diglucoside anthrone from Aloe, homonataloside B, is discussed. This compound has been detected in only 14 species in a chemotaxonomic survey of 380 Aloe species. The homonataloside B-accumulating species are only found in Africa with none of the Malagasy endemics producing this compound. A summary of the morphological variation is presented together with the taxonomic distribution of this unique anthrone. The representatives of this distinct chemotype occupy disparate positions in the largely artificial hierarchy of the present classification system. Species included in this chemotype provide chemical evidence of hybridisation in Aloe.



Publications - TUT, Pretoria, Gauteng, South Africa [2010 © alvaroviljoen.com]