Collezione cecidiologica italiana - Cecidotheca italica | Italian galls collection - Cecidotheca italica

Since the end of the 19th century, there have been collections of galls or cecidi, i.e. protuberances produced on plants by mite and insect bites or by the attack of fungi and bacteria. The FI gall collection is divided into two parts: a general one, open to the admission of new specimens, currently consisting of material mostly from Tuscany and to be referred to the general herbarium (FI-GEN); the other (this) is the Alessandro Trotter's (1874–1967) and Giacomo Cecconi's (1833–1910) 'Cecidotheca Italica', a serial collection of 575 gall samples.

It was mainly compiled by Trotter between 1900 and 1918 and was distributed in 23 fascicles, each containing 25 'items'. The latter, put in envelopes mounted on 24 x 33 cm sheets, are indeed a dual specimen, and the printed labels indicate both the name of the plant and that of the gall-forming agent.