page_title: Stinging plant
section_title: Other Urticaceae
hierarchical_section_title: Stinging plant / Plants with stinging hairs / Other Urticaceae
caption_attribution_description: English: Canadian wood-nettle (Laportea canadensis), photographed at Brooklyn Botanic Garden (New York) in September English: This photo is from Gardenology.org and is available under CC-BY-SA 3.0 license. If you use it, please include attribution to Gardenology.org, with a link if the media allows it. If the name is missing, click here. This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page. Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by an OTRS member and stored in our permission archive. The correspondence is available to trusted volunteers&#160;as ticket #2010122210000934. If you have questions about the archived correspondence, please use the OTRS noticeboard. Ticket link: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&amp;TicketNumber=2010122210000934
context_page_description: 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. Stinging hairs occur particularly in the families Urticaceae, Loasaceae, Boraginaceae and Euphorbiaceae. Such hairs have been shown to deter grazing mammals, but are no more effective against insect attack than non-stinging hairs. Many plants with stinging hairs have the word "nettle" in their English name, but may not be related to "true nettles".
  Though several unrelated families of plants have stinging hairs, their structure is generally similar. A solid base supports a single elongated cell with a brittle tip. When the tip is broken, the exposed sharp point penetrates the skin and pressure injects toxins. The precise chemicals involved in causing pain and irritation are not yet fully understood.
context_section_description: The family Urticaceae also contains some other plants with stinging hairs that are not members of the genus Urtica. These include:
  Dendrocnide spp.
  Dendrocnide excelsa (giant stinging tree)
  Dendrocnide moroides (gympie-gympie)
  Dendrocnide peltata (stinging tree, jelaton)
  Girardinia diversifolia (synonym: G. leschenaultiana) (Nilgiri nettle, Himalayan giant nettle), source of allo fibre
  Laportea canadensis (wood nettle)
  Urera spp.
  Urera baccifera (nettle tree)
  Urera tenax
caption: Laportea canadensis in cultivation
exif: {"Image Copyright": "Raffi Kojian, Gardenology.org", "Image ExifOffset": "2164", "Image XPComment": "[82, 0, 97, 0, 102, 0, 102, 0, 105, 0, 32, 0, 75, 0, 111, 0, 106, 0, 105, 0, ... ]", "Image XPAuthor": "Raffi Kojian, Gardenology.org", "Image Padding": "[]", "EXIF Padding": "[]"}