Earthwatcher's photos with the keyword: Equisetum arvense

Field Horsetail ( Equisetum arvense ) growing in the Porter Valley, Sheffield, South Yorkshire. These are very ancient plants, whose ancesters (e.g. Calamites ) grew in the Upper Carboniferous coal swamps around 300 million years ago.

Field Horsetail ( Equisetum arvense ) growing in the Porter Valley, Sheffield, South Yorkshire. These are very ancient plants, whose ancesters (e.g. Calamites ) grew in the Upper Carboniferous coal swamps around 300 million years ago.