Fern ID Field Trip

Mt. Tamalpais Fern ID Field Trip
Thursday, February 12, 2026
10 am to 2 pm
Leaders: Kurt Rademacher & David Edelson

In our deep winter when most of Mt. Tamalpais’ wildflowers are dormant or non-existent, the ancient ferns are in their glory, unfurling on shady creekbanks and sunny cliff faces. Ever find the diversity of these feathery fronds confusing? Want to be able to distinguish a lady fern from a coastal wood fern, or the leather fern from a bird's foot fern? How about a 6-foot giant chain fern from a 2-inch lip fern?! Come join us for an exploration of about a dozen different species, their intriguing life cycles, extreme habitat preferences, and how to identify them. This will involve some close looking and attention to detail, so please bring a 4-power or stronger hand lens if you have one.

Gathering at Pan Toll, we plan to hike about two miles, introducing fern anatomy and biology on some common species, and then on to less common cliff brakes and lip ferns. Driving on to nearby Rock Springs (free parking), we will search for other denizens of woodlands and serpentine outcrops.

Directions: Meet us at the Pan Toll Campground parking lot on Panorama Highway, about 30 minutes from Highway 101 exits in Mill Valley, or 5 minutes up from Stinson Beach. State Park parking fee is $8 cash or check or check out a State Parks pass from your local library. There are restrooms at both Pan Toll and Rock Springs.

Bring: Water, a snack/lunch. Hiking pole is suggested, as trails are steep and rocky at some places. Dress in layers, mittens, and bring rain-gear, as weather on the mountain can change quickly.

Rain cancels. Check Meetup for notification.

If you have not done so already, please sign the CNPS Marin 2026 Waiver

Practice clean trail etiquette. Pocket Guide - Every Step Counts and Cleanliness Tips for Hikers

Email Ann with any questions: annonfire@gmail.com Text for day-of-trip questions or issues: 530-521-4402

Attendee limit: 20