What can you say about pepperweed other than the seeds can be ground up and taste peppery. I suppose the seeds of every plant in the world have been ground up at some time to see how they taste, and the pepperweed’s seeds were the most like peppercorns (Piper nigrum – Piperaceae).
Pepperweed has the shape of a bottlebrush. To distinguish it from other bottlebrush-looking plants, look closely at the pods and leaves. The leaves clasp the stem.