Fitzroya cupressoides Cupressaceae

P-acoradiene [295]. These compounds were seen in all other trees but apparently at significantly different quantitative levels. For structures 286-298 see Fig. 3.13. 

The second chemotype (their Type 1) had, in addition to the Type 0 array, substantial amounts of a-longipinene [297] and an unidentified sesquiterpene alcohol. The third chemotype (their Type 2) was distinguished by the presence of, among other compounds, cedrene isomers, [a-cedrene is shown as 298], and large amounts of the isomeric sesquiterpene alcohols a-acorenol [294] and its P-isomer [295]. The acora-diene isomers [295 and 296] were also identified. Some geographic patterning was observed in the Type 0 chemotype when the data were subjected to numerical analysis a trend in the reduction of caryophyllene content was revealed in a west to east direction. The data sets for Types 1 and 2 were too small to allow for similar analysis. 

The situation becomes somewhat more complicated if one considers the effects on genetic variation if more than one refugium had existed. Premoli et al. (2000) discussed two effects the Cordillera effect and the extent-of-the-ice effect. In the case of the Cordillera effect, the assumption was made that there was incomplete ice coverage, resulting in patches of forest remaining intact on either side of the Andes this amounts to the existence of multiple local refugia that would supply propagules 

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