Given the option of 3 types of tree to draw, I chose eucalyptus--after our visit to Australia I became quite fond of eucalyptus trees.
The bark of a eucalyptus is very interesting as it peels away in spots, creating interesting subtle color and texture variations. But the really interesting color is in the leaves, if you look at them up close. I tried to convey that in this drawing.
Paints used: cobalt teal blue, new gamboge, sap green, phthalo blue red shade, quinacridone burnt scarlet, burnt sienna.