Medicinal Lepidium

It's my first day in Costa Rica for the Organization for Tropical Studies (OTS) graduate course in Tropical Plant Systematics. After a quick trip to the University of Costa Rica campus and the Museo Nacional, we explored the mercado central of San Jose. I stumbled across this medicinal plants vendor who was selling bundles of dried Lepidium, which unbeknownst to me, has some suspected medicinal values. Regretfully, I didn't ask how much each bundle cost, but it's a miracle they sell at all with all of the weedy Lepidium growing throughout the streets of San Jose.