Equisetum arvense AG.JPG

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Perennial, 10-50 cm high. Stems articulated, with hollow internodes. Spring stems (March-May) brownish, not branched, with a blunt apical sporebearing spikelet. Summer stems barren, soft, with numerous branch whorls. Along rivers and streams, wet places. From plains to the middle mountain belt. Temperate zone of the world.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith