Crataegus monogyna, or common hawthorn, is a species with a strong cultural value in Ireland, and for all the Celts-descending populations. Commonly known as the fairy tree, it is considered sacred, with traditions and beliefs that vary regionally [1]. It has also an indirect agricultural value, as it features in cultivated fields for the same cultural reasons. It is native to Ireland, and is widely researched globally, with more than 200 of its features being studied, as retrieved from relevant databases.

1. MacCoitir, N. 2003. Irish Trees: Myths, Legends & Folklore. Gill & Macmillan Ltd. ISBN 1848890885, 9781848890886


Microscope image of leaf surface showing particulate pollution

Stomatal Conductance

Particulate Matter