The Witness Tree Project | The Witness Trees | Davidia involucrata var. Vilmoriniana

The Davidia involucrata, also known as handkerchief tree, is a species with great ornamental value, usually planted in parks and gardens [1]. It is a species vulnerable to extinction at a global level [2], and as yet only moderately researched globally, with less than 30 features being studied, as retrieved from relevant databases.

The tree in Trinity College Botanic garden has an individual value, as a fine specimen in the collection.

1. POWO (2022). “Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 27 July 2022.”

2. Sun, W. 1998. Davidia involucrata var. vilmoriniana. The IUCN Red List of Threatened Species 1998: e.T32337A9699185. Accessed on 25 April 2023.


Microscope image of leaf surface showing particulate pollution

Stomatal Conductance

Particulate Matter