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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 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.
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).
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 ...
Soleirolia soleirolii (/ s oʊ ˌ l iː ə ˈ r oʊ l i ə s oʊ ˌ l iː ə ˈ r oʊ l i ˌ aɪ, ˌ s oʊ l ɪ ˈ r oʊ-/, [2] [3] syn. Helxine soleirolii) is a flowering plant in the nettle family.It has a number of common names, including baby's tears, angel's tears, peace in the home, bits and pieces, bread and cheese, Corsican creeper, Corsican curse, friendship plant, mind-your-own ...
The common names archangel and dead-nettle have been in use for hundreds of years. In 1578 Rembert Dodoens observed that "Dead nettell groweth every where". [46] John Gerard used the word "archangel" in 1633. [47] Gerard believed the dead-nettles were so-named because their leaves resembled those of the true nettles in the family Urticaceae. [48]
Urtica gracilis, commonly known as the slender nettle, tall nettle, or American stinging nettle, is a perennial plant without woody stems that is well known for the unpleasant stinging hairs on its leaves and stems. [2] It is native to much of North America from Guatemala northwards and temperate areas of South America. [1]
Negative numbers: Real numbers that are less than zero. Because zero itself has no sign, neither the positive numbers nor the negative numbers include zero. When zero is a possibility, the following terms are often used: Non-negative numbers: Real numbers that are greater than or equal to zero. Thus a non-negative number is either zero or positive.