The Himalayan horsetail (Equisetum diffusum) is a perennial that averages at 10–25 inches. The Himalayas plant is silica rich and has a rhizomatous stem. This shiny brown stem can have many small hair-like roots and may also grow tubers.
External links Equisetum diffusum {Equisetaceae} Himalayan Horsetail at the University of Connecticut Department of Ecology and Evolutionary Biology Equisetum diffusum D.Don in Ferns of Thailand, Laos and Cambodia at Royal Botanic Garden Edinburgh Equisetum diffusum D.Don - basic information on the Himalayan Horsetail at the World of Equisetum