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References

← Older revision		Revision as of 07:57, 8 October 2022
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	[[Category:Mimosoideae]]		[[Category:Mimosoideae]]
	[[Category:Rapid plant movement]]		[[Category:Rapid plant movement]]
			[[Category:State symbols of Montenegro]]

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{{italictitle}}
{{Taxobox
| image = Mimosa pudica W2 IMG 2374.jpg
| image_width = frameless
| image_caption = ''Mimosa pudica''
| regnum = [[Plantae]]
| unranked_divisio = [[Angiosperms]]
| unranked_classis = [[Eudicots]]
| unranked_ordo = [[Rosids]]
| ordo = [[Fabales]]
| familia = [[Fabaceae]]
| subfamilia = [[Mimosoideae]]
| genus = ''[[Mimosa]]''
| species = '''''M. pudica'''''
| binomial = ''Mimosa pudica''
| binomial_authority = [[Carolus Linnaeus|L.]]<ref>{{cite web
|url=http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?24405
|title=Mimosa pudica information from NPGS/GRIN
|publisher=www.ars-grin.gov
|accessdate=2008-03-27
|last=
|first=
|archive-date=2009-02-11
|archive-url=https://web.archive.org/web/20090211020047/http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?24405
|url-status=dead
}}</ref>
}}
[[File:Mimosa Pudica.gif|thumb|''Mimosa pudica'' folding leaflets inward.]]
[[File:Mimosa pudica closed.JPG|right|thumb|''Mimosa pudica'' with leaves closed]]
[[File: Mimosa pudica MHNT.BOT.2004.0.0.495.jpg|thumb|'' Mimosa pudica '']]

'''''Mimosa pudica''''' <ref>from {{lang-la|pudica}} "shy, bashful or shrinking"; also called 'Sensitive Plant' and 'Touch-me-not'</ref> is a
well-known [[species]] of ''[[Mimosa]]''. It is a creeping annual or perennial [[herb]] often grown for its curiosity value: the compound leaves fold inward and droop when touched or shaken, re-opening minutes later. The species is native to [[South America]] and [[Central America]], but is now a widespread [[weed]].

==Description==
The stem is erect in young plants, but becomes creeping or trailing with age. The leaves of the ''Mimosa pudica'' are compound leaves.

The leaves are [[Pinnate|bipinnately]] compound, with one or two pinnae pairs, and 10-26 leaflets per pinna. The round-shaped flower heads, which are [[inflorescence]]s, are 8–10 mm in diameter (excluding the stamens). The floret petals are red in their upper part and the filaments are pink to lavender. The [[fruit]] consists of clusters of 2-8 pods from 1–2 cm long each. The pods break into 2-5 segments and contain pale brown seeds some 2.5 mm long. The flowers are pollinated by the wind and insects.<ref name=Forest>{{cite web |url=http://www.fs.fed.us/global/iitf/pdf/shrubs/Mimosa%20pudica.pdf |title=''Mimosa pudica'' L. |accessdate=2008-03-25|publisher=US Forest Service}}</ref> The seeds have hard seed coats which restrict germination.<ref>{{Cite journal| title = Germination, emergence, and dormancy of Mimosa pudica| year = 2009| journal = Weed Biology and Management| pages = 38–45| volume = 9| issue = 1| doi = 10.1111/j.1445-6664.2008.00316.x| last1 = Chauhan | first1 = Bhagirath S. Johnson| last2 = Davi | first2 = E.}}</ref>

== Plant movement ==
''Mimosa pudica'' is well known for its rapid [[plant movement]].
Like a number of other plant species, it undergoes changes in leaf orientation termed "sleep". The foliage closes during darkness and reopens in light.<ref>
{{cite book
| last1 = Raven | first1 = Peter H.
| last2 = Evert | first2 = Ray F.
| last3 = Eichhorn
| first3 = Susan E.
| date = January 2005
| title = Biology of plants
| publisher = Freeman
| location = New York
| edition = 7th
| chapter = Section 6. Physiology of seed plants: 29. Plant nutrition and soils
| page = 639
| isbn = 978-0-7167-1007-3
| oclc = 56051064
| chapter-url = https://books.google.com/books?id=8tz2aB1-jb4C&pg=PA58
| lccn = 2004053303
}}</ref>

The leaves also close when touched, warmed, blown, or shaken. When the plant is disturbed, specific regions on the stems release [[potassium]] [[ion]]s which force water out of the cell vacuoles. The water diffuses out of the cells, producing a loss of cell pressure and cell collapse; this differential turgidity between different regions of cells results in the closing of the leaflets and the collapse of the leaf [[petiole]]. This is quite a common [[Trait (biology)|trait]] in the [[Mimosoideae]] subfamily of the legume family, [[Fabaceae]]. The stimulus can also be transmitted to neighbouring leaves. The [[function]] of this trait is not known. The plant may use its ability as a defense from predators. Animals may be afraid of a fast moving plant and would rather eat a less active one. Another possible explanation is that the sudden movement dislodges harmful insects.

== References ==
{{Reflist}}

*Barneby, R.C. 1992. "Sensitivae Censitae: a description of the genus ''Mimosa'' Linnaeus (Mimosaceae) in the New World." ''Memoirs of the New York Botanical Garden'', '''65'''.
[change]

[[Category:Mimosoideae]]
[[Category:Rapid plant movement]]

Mimosa pudica - Revision history

141.101.107.59: /* References */

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