horsetail

1. Perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes;
   Tend to become weedy;
   Common in northern hemisphere;
   Some in Africa and South America (synset 113240320)
   is a type of: fern ally - pteridophytes of other classes than Filicopsida
   subtypes:

   • common horsetail, equisetum arvense, field horsetail - of Eurasia and Greenland and North America
   • equisetum fluviatile, swamp horsetail, water horsetail - Eurasia; northern North America to Virginia
   • equisetum hyemale, equisetum hyemale robustum, equisetum robustum, rough horsetail, scouring rush - evergreen erect horsetail with rough-edged stems; formerly used for scouring utensils
   • equisetum palustre, marsh horsetail - scouring-rush horsetail widely distributed in wet or boggy areas of northern hemisphere
   • equisetum sylvaticum, wood horsetail - Eurasia except southern Russia; northern North America
   • equisetum variegatum, variegated horsetail, variegated scouring rush - northern North America; Greenland; northern and central Europe
   belongs to: equisetum, genus equisetum - horsetails; coextensive with the family Equisetaceae
   has: cone, strobile, strobilus - cone-shaped mass of ovule- or spore-bearing scales or bracts

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