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. 2009 Nov 11;14(11):4597–4613. doi: 10.3390/molecules14114597

Figure 1.

Figure 1

Cluster analysis based on a binary presence-absence matrix of the volatile profile of 15 taxa [4] and C. europaea using Euclidean distances between taxa. Unidenntified compounds were omitted from the analysis. By comparing our data with those of the 15 taxa studied by Jürgens [4] it is clear that C. europaea falls within the group of other three species: Hoodia gordonii, Desmidorchis flava and Orbea semota spp. orientalis.