A very nice collection of 17 botanical charts, heavy cartboard, brilliant colours on black wall, ca. 50 x 70 cm.
They come from an old school in Wien, second half of 1800's.

The title of all of them is:

“Ausländische Kulturpflanzen in farbigen wandtafeln” (Foreign cultivated plants in colored blackboards), and they were published by

“Verlag Friedrich Vieweg & Sohn, Braunschweig“ (Publishing House, “Friedrich Vieweg & Sohn“, Braunschweig)

A total of 17 charts, two of them comes also with a tree chart behind, and all of them come with the ink mark of the school.
Except few traces of age (and some old pencil numbers) they’re in very good condition.