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Cnidoscolus stimulosus, the bull nettle, [1] spurge nettle, stinging nettle, tread-softly or finger rot, is a perennial herb covered with stinging hairs, native to southeastern North America. A member of the family Euphorbiaceae (spurge family), it is not a true nettle .
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.
Mowing weakens stinging nettle by decreasing leaf mass and limiting root growth. It also eliminates spread by seed. Mowing is an effective method for controlling stinging nettle growing in ...
Urticating hairs of a stinging nettle. The most common form of urticating hairs in plants are typified by nettles, which possess sharp-pointed hollow bristles seated on a gland that secretes an acrid fluid. The points of these bristles usually break off in the wound, and the acrid fluid is pressed into it.
Stems will vary in between being smooth and covered in stiff hairs (glabrous to strigose), but have few of the stinging hairs the plant is known for. [ 4 ] The leaves of Urtica gracilis are variable, elliptic , lanceolate , or ovate , and 6–20 cm long by 2–13 cm across, with a base that can either be rounded or shaped like a heart ( rounded ...
Stinging hairs of Urtica dioica (stinging nettle) A stinging plant or a plant with stinging hairs is a plant with hairs on its leaves or stems that are capable of injecting substances that cause pain or irritation. Other plants, such as opuntias, have hairs or spines that cause mechanical irritation, but do not inject chemicals.
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:
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 insects.