Fatty acid methyl ester (ME) profiles identified from the phloem of <i>Pinus contorta</i> (Pc), <i>P</i>. <i>banksiana</i> (Pb), <i>P</i>. <i>resinosa</i> (Pr), <i>P</i>. <i>sylvestris</i> (Ps), <i>P</i>. <i>flexilis</i> (Pf), <i>Picea glauca</i> (Pg), and <i>Populus tremuloides</i> (Pt).

C:D (n-x) indicate the number of carbon atoms, double bonds in the straight chain of fatty acids, and name of individual compound, respectively. (+) and (−) denote presence and absence of a particular fatty acid in each species.