Author-mycologist Lawrence Millman will lead a mushroom walk in Concord or Lincoln (exact location to be determined before the event based on conditions). However dry or unpromising the conditions, he guarantees that participants will find a minimum of 30 different species. You will learn to identify mushrooms both with and without a guidebook, and you’ll also unlearn everything you were ever told about how to distinguish a poisonous from a non-poisonous species. Be aware, however, that the focus of this event is scientific, not culinary. Bring a basket, wax paper, a pocket knife, a hand lens (if you have one), and – most important of all – a spirit of adventure. Please join us come rain or shine! Dress appropriately for weather.  Limited to 16. If students have questions for Larry Millman about the walk, call (617) 492-5861. Directions to Estabrook Woods from Concord Center, MA: Get to Concord Center and the Colonial Inn, in the heart of Concord Center. If you’re facing the Colonial Inn, take a right onto Monument Street and head toward the Old North Bridge. Take a left on Liberty Street, then right on Estabrook Road. After less than half a mile, take another right on Estabrook Road when it bends to the right. Go to the end of the road and park (space for cars on the left-hand side of road).  Cost – $76.