With Isabella Array, BBG When did you first notice a lichen—the living things that grow on the surface of trees and stones? Take a journey to understand and identify the lichens around us and gain a deeper appreciation for these marvelous lifeforms. Outdoors; meet at the Lily Pool Terrace staircase; weather permitting. Registrations are limited to one person only; choose one morning session, plus the keynote if desired. Registrations for overlapping sessions or multiple seats will be canceled.