Photo: Equisetum myriochaetum 0.

A giant horsetail - it's taller than me. Brussels bot.g., Belgium. Greenhouse. 2008-06-05.

Equisetum myriochaetum Schltd. & Cham.
Engl.: Mexican giant horsetail.
Fran.: prêle géante du Mexique.
Dutch: mexicaanse reuzenpaardenstaart.
Bot. syn.: Equisetum mexicanum Milde