Lunaria annua
The translucent seedpods, also called silicles, of Lunaria annua, commonly called annual honesty, are unique because the seeds can be observed throughout their development. The ovules (seeds) are attached to the placenta in the ovary through a structure known as the funiculus, the plant equivalent of an umbilical cord. At maturity, the valves on the side open up, the seeds fall away, but the papery thin septum in the middle remains on the stalk throughout the winter.

Kata Dosa, graduate student, Nelson Institute for Environmental Studies