6 Thermidor: Prêle (horsetail, scouring-rush, Equisetum spp.)
Okay, sweet, now we’re talking old. Not “domesticated for thousands of years” old, this is “hung out with dinosaurs” old. Equisetum is the only living genus of the family Equisetaceae…which is the only living family in the order Equisetales, which is the only living order in the class Equisetopsida. Its relative Calamites is off being coal now.
What is Equisetum up to these days? Oh, you know, the same old same-old. Reproducing by spores, coating their stems with silicates and being used as fine sandpaper or metal polish, invading New Zealand. Plant things. Horsetail things.