Equisetum Taxonomy
E. ramosissimum Desf. subsp. ramosissimum = E. ramosissimum Desf. ssp./var. ramosissimum
E. ramosissimum Desf. subsp. debile (Roxb. ex Vaucher) Hauke = E. ramosissimum Desf. ssp./var. huegelii (Milde) Christenh. & Husby
https://academic.oup.com/botlinnean/article-abstract/189/4/311/5420235?redirectedFrom=fulltext
