These botanical posters are quite lovely. They are reproductions of a series of Scientific German Educational Charts from the 1950s and 60s.
The posters are mounted on canvas, fitted with wooden rods, and hang by nylon cords. They also come with a key explaining the chart. For example:
“Garden Pea Key- Pisum sativum: Fig. 1 Plant in blossom. Fig. 2 Longitudinal section through flower. Fig. 3 Tube of stamens with single filament. Fig. 4 Flower, front view. Fig. 5 Young legume of pea, opened. Fig. 6 in germination.”
I also like the zoology posters of various insects and animals. Here is one of a cuttlefish: