The giant horsetail (Equisetum telmateia) is a plant belonging to the horsetail family (Equisetaceae). This plant is native to Europe to the Caspian Sea and western North America.
The plant is 30-180 cm tall and is dark brown, tuberous stems. The ivory white, hollow stem is about 1 cm thick and dense whorls obliquely protruding or slightly protruding, green branches. The cavity is more than two thirds the diameter of the stem. The wreaths opposite leaves consist of small scales, where the pale green leaf sheaths are fused to a stalk loosely fitting sheath. The up to 2 cm long, pale green stengelscheden have awl-shaped, brown, smalvliezig edged teeth.
In April and May appear before the barren stems to 50 cm long, fertile stems topped the 10 cm long track spikes. The blunt ear which consists of scales inside the sporangium the spores are located. If the spores are ripe the fertile stems die off.
The tracks have chlorophyll and two jump wires (elateren) in the dry state to trace his wound. When the spring wires get wet they stretch and push the spores out of the ear. There are two types of tracks, male and female. The spores grow into account for leaf green sprouts (prothallia). At this stage takes place after fertilization the ponytail into a complete plant can grow. The prothallia bound to a very open habitat.
The plant is found in wet, moderately rich soil.
Names in other languages:
• German: Riesen-Schachtelhalm
• English: Great Horsetail
• French: Grande Prêle
See also: International Flower Delivery, Florist