Don Lubin and Raymond Abair will lead a New England Wild Flower Society field trip on Sunday, June 13, from 11 – 3.  The large woods known as Estabrook Woods on the north side of Concord, Massachusetts has more fern diversity than one might expect. The normal array of common ferns is augmented by rich swamp edges and as well as old limestone quarry pits.  Expect to see Massachusetts fern, Christmas fern, ebony spleenwort, fragile fern, and perhaps a couple of other calciphiles.  Some off-trail walking is involved, but not much climbing. Wear long pants, and bring insect repellent, a bag lunch, and a hand lens if you have one.  Directions will be sent upon registration, which may be done by logging on to www.newfs.org.  Fee is $32 for members and $36 for nonmembers.