Thanks to Larry Jackel, bonsai director of the Denver Botanic Gardens and author of "Ponderosa Pines as Bonsai," for an excellent presentation on the natural form of bonsai. Larry's book is available. Contact Larry for details.
Comparing images taken while collecting in Colorado and Wyoming, Larry will explored "The Natural Form" and how the tree teaches us about bonsai design. Larry's best teacher of bonsai has been the wild tree in its natural environment. Larry also offered a design analysis for several trees brought in by members.