Tree Mob™! Stipules and bonus mob on Birches in full fruit

July 9, 2015

Betula grossa stipules

Tree Mob™! Stipules and bonus mob on Birches in full fruit

This double feature tree mob with Arboretum Director and Arnold Professor of Organismic and Evolutionary Biology William (Ned) Friedman will focus on the Arnold Arboretum’s outstanding birch collection on Bussey Hill.

If you don’t know about stipules, this mob is for you. It’s not easy being a young leaf, emerging from the warm moist world of a shoot tip into the cold dry world outside. Come find out about one of the largely unappreciated parts of the leaf, the stipule. This amazing leaf specialization helps ease this transition to adulthood for the leaves of many diverse plant species, including birches. The second part of the mob will focus on birch fruits. Bring a hand lens (loupe) if you have one (we will have lenses to loan out too).

Meet at Betula grossa, Acc. # 199-2007*A in the birch collection on the slope of Bussey Hill, opposite the drive to the Arboretum’s Dana Greenhouses and nursery facilities at 7:00pm on Friday, July 10.

Parking: Park along the Arborway and enter through the Arborway or Forest Hills Gates. Walk on the paved roadway toward the ponds and head uphill past the lilac collection towards the Greenhouse Drive. Then follow the signs to the mob. Centre Street Gate is the closest gate but has limited parking. Or park on Bussey Street and take Hemlock Hill Road to Valley Road to Bussey Hill Road. Centre Street Gate is the closest gate but has limited parking.

Public Transportation: Take the T to Forest Hills. Exit the station at the upper level. Cross Washington Street and walk uphill on the sidewalk closest to the overpass to the Forest Hills Gate. Follow directions above.

See map for gate and collections locations.

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