Plate IX.
Fig. 1. Triosteum perfoliatum.
Fig. 2. A flower separated.
Fig. 3. The corolla opened, showing the stamens and style.
Fig. 4. The calyx.
Fig. 5. The fruit, crowned with the calyx.
Fig. 6. The same dissected to show the three seeds.
Fig. 7. A seed.

This image is from Triosteum in American Medical Botany, Bigelow, 1817-1821.