Westendorp, Herb. Crypt. Belg.
G.D. Westendorp [1-250]

Academy of Natural Sciences of Drexel University
Catalog #: PH00328005
#s.n.
Verrucaria gemmata (Ach.) Ach.
Belgium, environs de Bruxelles et d'Ypres (Brussels and Ypres)