• Lush vegetation on the top of Spectacle Island's North drumlin dominates the foreground. Boston's skyline can be seen in the distance.  The park's logo with tag line minutes away, worlds apart empashises the stark contrast between the city and islands.

    Boston Harbor Islands

    National Recreation Area Massachusetts

The Lichens and Bryophytes of the Boston Harbor Islands

Scott Lagreca
Elisabeth Lay
Douglas Greene
Elizabeth Kneiper
Mary Lincoln
 
Publishied in Northeastern Naturalist: Vol. 12, No. sp3, pp. 77–98

A survey of the Boston Harbor Islands national park area yielded 175 lichen species in 67 genera, and 70 bryophyte species in 44 genera. Ten percent of the lichens represent a maritime floristic element, and 4% represent a coastal plain element. Caloplaca verruculifera, an orange lichen of rocky shores, is reported new for Massachusetts. Human disturbance and air pollution seem to be the major factors limiting the colonization of lichens and bryophytes on the islands, and specific recommendations for protecting sensitive lichen and bryophyte communities are presented.

Did You Know?

CCC Workers

The Civilian Conservation Corps planted ornamental trees and shrubbery throughout Boston Harbor Islands National Recreation Area during the 1930s. In particular, structures of Gallops Island are lined with privet hedges, mock orange, snowberry, forsythia and coniferous trees.