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Urtica dioica, often known as common nettle, burn nettle, stinging nettle (although not all plants of this species sting) or nettle leaf, or just a nettle or stinger, is a herbaceous perennial flowering plant in the family Urticaceae. Originally native to Europe, much of temperate Asia and western North Africa, [2] it is now found worldwide.
Nettle refers to plants with stinging hairs, particularly those of the genus Urtica. It can also refer to plants which resemble Urtica species in appearance but do not have stinging hairs. Plants called "nettle" include:
Urtica is a genus of flowering plants in the family Urticaceae. Many species have stinging hairs and may be called nettles or stinging nettles (the latter name applying particularly to U. dioica). The generic name Urtica derives from the Latin for 'sting'. Due to the stinging hairs, Urtica are rarely eaten by herbivores, but provide shelter for ...
The Urticaceae / ɜːr t ɪ ˈ k eɪ s iː / are a family, the nettle family, of flowering plants.The family name comes from the genus Urtica.The Urticaceae include a number of well-known and useful plants, including nettles in the genus Urtica, ramie (Boehmeria nivea), māmaki (Pipturus albidus), and ajlai (Debregeasia saeneb).
There are also plants with stinging hairs that are unrelated to the Urticaceae: [11] Cnidoscolus urens, one of a number of species called "bull nettle" or "mala mujer" Boraginaceae: Hydrophylloideae. Phacelia malvifolia (stinging phacelia) [12] Wigandia spp. [13] Euphorbiaceae. Cnidoscolus spp. Cnidoscolus stimulosus (bull nettle or spurge nettle)
There are also many wild edible plant stems. In North America, these include the shoots of woodsorrel (usually eaten along with the leaves), chickweeds, galinsoga, common purslane, Japanese knotweed, winter cress and other wild mustards, thistles (de-thorned), stinging nettles (cooked), bellworts, violets, amaranth and slippery elm, among many others.
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Cystolith from leaf of Ficus elastica Drawing of a cystolith from leaf of Ficus elastica. Cystolith (Gr. "cavity" and "stone") is a botanical term for outgrowths of the epidermal cell wall, usually of calcium carbonate but sometimes of silicon dioxide also, formed in a cellulose matrix in special cells called lithocysts, generally in the leaf of plants.