Source de la synonymie
Christenhusz, M., Bangiolo, L., Chase, M., Fay, M., Husby, C., Witkus, M. & Viruel, J. 2019. Phylogenetics, classification and typification of extant horsetails (Equisetum, Equisetaceae). Botanical Journal of the Linnean Society, 189 (4) : 311-352. [CD_REF = 970738] Equisetum hyemale subsp. affine (Engelm.) Calder & Roy L.Taylor, 1965

 

Autorité :

Date de publication : The American journal of sciences and arts (46) : 88 (1844)

Syntype : ​Syntypes : USA (Louisiana): Islands of the Mississippi, Bory de St. Vincent (?). USA Banks of Red River, Dr. Hale in Herb. Short (?). USA (Missouri): Mississippi near St.
Louis, G. Engelmann (MO?); none located.
     Références : Christenhusz et al. (2019)