Urticaceae

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Nettle faimily
Urtica dioica (Blüten).jpg
Urtica dioica (Stingin nettle)
Scienteefic classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Rosales
Family: Urticaceae
Juss., 1789
Synonyms

Cecropiaceae C. C. Berg[1]

Urticaceae /ɜrtɨˈks/, or the nettle faimily, is a faimily o flouerin plants. The faimily name comes frae the genus Urtica (nettles). Urticaceae include a nummer o well-kent an uiseful plants, includin the aforementioned nettles, ramie (Boehmeria nivea), māmaki (Pipturus albidus), an ajlai (Debregeasia saeneb).

The faimily includes approximately 2600 species, grouped intae 54 tae 79 genera accordin tae the database o the Ryal Botanic Gardens, Kew. The lairgest genera are Pilea (500 tae 715 species), Elatostema (300 species), Urtica (80 species), an Cecropia (75 species).

Urticaceae can be foond warldwide, apart frae the polar regions.

Taxonomy[eedit | eedit soorce]

Male and female flower of Urtica

APG II system puts Urticaceae in order Rosales, while aulder systems consider it pairt of Urticales, along wi Ulmaceae, Moraceae an Cannabaceae. APG still considers "auld" Urticales a monophyletic group, but does nae recognise it as an order on its awn.

Description[eedit | eedit soorce]

Urticaceae can be shrubs (e.g. Pilea), lianas, yerbs (e.g. Urtica, Parietaria), or, rarely, trees (Dendrocnide, Cecropia).

Leaves are usually entire an bear stipules. Urticatin (stinging) hairs are eften present.

Urticaceae hae usually unisexual flouers an can be baith monoecious or dioecious. They are pollinated bi the wind. Maist disperse their pollen when the stamens are mature an their filaments straighten explosively, a peculiar an conspicuously specialised mechanism.

Genera (Partial leet)[eedit | eedit soorce]

Image gallery[eedit | eedit soorce]

See also[eedit | eedit soorce]

References[eedit | eedit soorce]

  1. Germplasm Resources Information Network (GRIN) (2003-01-17). "Family: Urticaceae Juss., nom. cons.". Taxonomy for Plants. USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 2008-04-24. 
  2. "Metatrophis F. Br.". Germplasm Resources Information Network. United States Department of Agriculture. 2009-01-16. Retrieved 2009-03-11.