Mt. Tam

Friday, May 11, 2018, 9am - 3pm: Bootjack BioBlitz and Rare Plant Treasure Hunt - Hosted by California State Parks, the National Park Service, One Tam, the California Native Plant Society, and the Mill Valley Library

Join California State Parks, the National Park Service, One Tam, and the California Native Plant Society on Mt. Tam as we try to identify and document every living species we see! Hone your naturalist skills, learn to use the iNaturalist smartphone app, and contribute valuable data about Mt. Tam’s biodiversity. No smartphone? No problem! No experience or special equipment are necessary, just bring your enthusiasm for science and nature. We will be exploring serpentine-influenced forests and grasslands to look for rare species and weeds alike.

This is a special bioblitz in which we will be teaming up with the California Native Plant Society to perform a Rare Plant Treasure Hunt.  Serpentine soils are home to a disproportionately high number of native plants relative to other soil types, and many species can only be found on this type of substrate.  We will survey new areas and inventory populations of state listed and locally rare species.  Help us find long lost populations of some of Marin’s most charismatic flora such as the California lady slipper orchid (Cypripedium californicum), and California rose bay (Rhododendron macrophyllum).

We will be taking observations in the field from 9 AM to noon, and then move to the Mill Valley Library, discuss identifications, and upload our observations.  This event is best suited for ages 14 and up; those under age 18 will need a parent or guardian present. 

What to Bring:

- Closed-toed shoes are required. Bring layers in case of weather changes, a hat, and sunscreen. 

- Bring a lunch and water. Extra water and snacks will be provided. 

- It is recommended that you bring a smartphone with the free iNaturalist app downloaded. Pairing up is also an option, and we will have some tablets for teams to use as well. 

Meeting Location: Bootjack Campground parking lot on Panoramic Highway. One Tam staff will provide parking passes.

Map link:,-122.6050449,17z/data=!4m8!1m2!2m1!1sbootjack+campground!3m4!1s0x8085910bac8ec611:0xc1f17e38f67069e6!8m2!3d37.9086943!4d-122.6019558

We do encourage carpooling to this event. If you are interested in carpooling, please email Rosa Schneider at with the email subject line of "Bioblitz carpool". 

Contact information: Rosa Schneider, 415-484-3164 or

iNaturalist project link:

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Event Type: Educational and Interpretive