Here are some more botanical illustrations in colored pencil. The top one is of a Rocky Mountain Douglas-fir (Pseudotsuga menziesii var. glauca) cone early in the year when it is still green. The next is of a Eastern redbud (Cercis canadensis) showing both young leaves and the pink spring flowers. Prints Available. Last one is of a winter bur oak (Quercus macrocarpa) twig that is still holding onto a leaf.