1. Adams, C. D., 1963:Compositae. ? InHepper, F. N., (Ed.): Flora of West Tropical Africa 2, pp. 225?297. ? London: Crown Agents for Oversea Governements and Administrations Publ.
2. Agnew, A. D. Q., 1974: Upland Kenya wildflowers. ? London: Oxford University Press.
3. Ahmad, V. U., Fizza, K., 1986: 4-epiplucheinol, a sesquiterpene fromPluchea arguta. ? Phytochemistry25: 949?950.
4. Anderberg, A. A., 1989: Phylogeny and reclassification of the tribeInuleae (Asteraceae). ? Canad. J. Bot.67: 2277?2296.
5. - 1991a: Taxonomy and phylogeny of the tribeGnaphalieae (Asteraceae). ? Opera Bot.104.