Species
Equisetum arvense (Field horsetail)
Equisetum arvense. Photo: (c) Griff, some rights reserved (CC BY-NC)
Equisetum arvense, the field horsetail or common horsetail, is an herbaceous perennial horsetail native throughout the arctic and temperate regions of the northern hemisphere. It has separate sterile non-reproductive and fertile spore-bearing stems growing from a perennial underground rhizomatous stem system. The fertile stems are produced in early spring and are non-photosynthetic, while the green sterile stems start to grow after the fertile stems have wilted and persist through the summer until the first autumn frosts….
Sightings
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