Career
Lamy de la Chapelle is known for botanical investigations of Haute-Vienne. In his research he collaborated with botanist Louis Jules Ernest Malinvaud (1836–1913). His herbarium, the Herbier Pierre Marie Edouard Lamy de la Chapelle is housed at the Institut des Herbiers Universitaires in Clermont-Ferrand.
The moss species, Didymodon lamyanus and Trichostomum lamyanum are named after him.