Synonyms: Equisetum alpinum; Equisetum asperrimum; Equisetum fusco-zonatum; Equisetum hiemale f. minus; Equisetum hiemale f. ramigera (heterotypic); Equisetum hiemale var. brevivaginatum; Equisetum hiemale var. elatius; Equisetum hiemale var. minus (homotypic); Equisetum hiemale var. paleaceum (homotypic); Equisetum hiemale var. rabenhorstii; Equisetum hiemale var. ramigerum (homotypic); Equisetum hiemale var. subramosum; Equisetum hiemale var. uliginosum; Equisetum hiemale var. vulgare; Equisetum hyemale f. hondae; Equisetum hyemale var. brachiatum; Equisetum hyemale var. doellii; Equisetum hyemale var. elatius; Equisetum hyemale var. rabenhorstii; Equisetum hyemale var. subramosum; Equisetum hyemale var. uliginosum; Equisetum hyemale var. vulgare; Equisetum ramosum paleaceum (heterotypic); Equisetum zonatum; Hippochaete hiemalis hiemalis; Hippochaete hyemalis (homotypic); Hippochaete hyemalis f. hondae