On Sunday, September 19, from 1:30 pm – 4:00 pm, Wellesley College Visiting Scholar Katie Griffith will lead a hike part way around Lake Waban to look at different species of trees and shrubs co-existing.  Meet for this free program at the Wellesley College Botanic Garden.  Pre-registration is required (781-283-3094, or email horticulture@wellesley.edu), and please dress appropriately for going outdoors.