The Geography of Phytochemical Races

2.2 Australia and New Zealand 13
Fig. 2.4 Map of Western
Australia showing location
of Geraldton after which
the Geraldton waxfl ower
(Chamelaucium uncinatum)
is named. Stippled area
represents an approximation
of the taxon’s range
of the total terpene variation as shown by principal-components analysis. Monoterpenes
identifi ed included the acyclic compounds geraniol [19] (See Fig. 2.5
for compounds 19–25), linaloöl [20], and citronellal [21], and cyclic compounds
such as α-pinene [22], ß-pinene [23], limonene [24], and α-terpenyl acetate [25].
Cluster analysis based on the mean percentage of leaf oils revealed four terpene
races: (1) citronellal dominant, (2) limonene dominant, (3) α-pinene dominant, and
Fig. 2.5 Compounds 19–25 from Chamelaucium uncinatum, the Geraldton waxfl ower