equisetum hyemale(n = noun.plant) equisetum hyemale robustum, equisetum robustum, rough horsetail, scouring rush - evergreen erect horsetail with rough-edged stems; formerly used for scouring utensils;
is a kind of horsetail

aplectrum hyemale, equisetum, equisetum arvense, equisetum fluviatile, equisetum hyemale robustum, equisetum palustre, equisetum robustum, equisetum sylvaticum, equisetum variegatum, genus equisetum