In 1900, herbarium labels by Fleroff became more specific and included a date of collection. For instance, "A.F. Fleroff. Plants of Vladimir Governorate. 17.VII.1900. Cephalanthera rubra Rich. District: Kovrovsky. Community: pine forest near the City of Kovrov. № 879. Collected by A. Fleroff". There were no affiliation with the Imperial Moscow University on his labels at that time. A blank label was printed in Warsaw.
	Part of: Seregin AP, Basov YM (2021) Fleroff goes digital: georeferenced records from "Flora des Gouvernements Wladimir" (Fleroff, 1902). Biodiversity Data Journal 9: e75299. https://doi.org/10.3897/BDJ.9.e75299