Dagne Ermias (Professor)Gemech Mengistu2018-06-202023-11-092018-06-202023-11-092007-07http://etd.aau.edu.et/handle/12345678/2374The monotypic genus Hagenia, which belongs to the family Rosacea, commonly known as Kosso is the most widely used taenicide against tapeworm. The flowers of this plant have been studied before, whereas no previous chemical work has been reported from the wood of H. abyssinica. C. macrostachyus stakes treated with successive extracts of H.abyssinica saw dust with EtOAC and MeOH, and direct extract of H.abyssinica saw dust with ethanol were damaged at different levels. However, C. macrostachyus stakes treated with diethyl ether extract of H. abyssinica female flower were not damaged at all.enHageniaThesis