LEAF WAX ALKANES IN THE GENUS COINCYA

Leaf wax alkanes in the genus Coincya vary between C-22 and C-31. This series is dominated by alkanes with an odd number of carbon atoms. Th e most abundant alkanes are C-29, C-31 and C-27. The main one, C-29, r anges from 53.3% in C. monensis subsp. nevadensis to 95.0% in C. monen sis subsp. recurvata var. setigera. A positive correlation between the content of C-29 and the glaucous character was observed. Likewise, th ere was a negative correlation between the availability of water and t he amount of C-29.