Sollya heterophylla

The western grey kangaroo (Macropusfuliginosus), the major indigenous herbivore in southwestern Australia, avoids plants of the family Myrtaceae (which include Eucalyptus spp. cloves, and guava), which includes 3500 species on that continent. Essential oils characterize the Myrtaceae many species contain two to nine of these. In one experiment, seven Myrtaceae species were not browsed, while comparable species of other families were. All seven species contained the monoterpene 2,5-dimethyl-3-methylene 1,5-heptadine. The kangaroos also browsed one non-Myrtaceae species (Sollya heterophylla, Pittosporaceae) very little. This species contained the same monoterpene (Jones etal, 2003). 

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