Mimosa somnians

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Mimosa somnians
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Mimosoideae
Genus: Mimosa
Species: M. somnians
Binomial name
Mimosa somnians
Humb. & Bonpl. ex Willd.[1]
  • Mimosa acutiflora Benth.[2]
  • Mimosa palpitans Willd.[2]
  • Mimosa podocarpa Benth.[2]
  • Mimosa quadrijuga Benth.[2]
  • Mimosa somnians Willd. var. podocarpa[2] (Benth.)Niederl.
  • Mimosa somnians Willd. var. quadrijuga[2] Niederl.
  • Mimosa somniculosa Kunth[2]

Mimosa somnians ("Dormideira") is a tree in the Fabaceae family. It is native to the Caribbean, Central America and South America.[2] It is a short, low lying shrub with minuscule thorns lining its stems like hairs.[3] Its leaves are sensitive, meaning that, when touched, they close quickly, similarly to Mimosa pudica.[4] It can be differentiated from Mimosa pudica in that its leaves are bipinnate, there are more than four subbranchlets and these originate from more than one point on the branch.[4]

Mimosa sominans's leaflets are 4–5 mm long.[3] The flowers form pink balls.[3] It propagates by seeds.[4]

Forms, subspecies and varieties[5]

  • Mimosa somnians f. viscida
  • Mimosa somnians subsp. longipes
  • Mimosa somnians subsp. viscida
  • Mimosa somnians var. aquatica
  • Mimosa somnians var. deminuta
  • Mimosa somnians var. diminuta
  • Mimosa somnians var. glandulosa
  • Mimosa somnians var. lasiocarpa
  • Mimosa somnians var. leptocaulis
  • Mimosa somnians var. longipes
  • Mimosa somnians var. lupulina
  • Mimosa somnians var. possensis
  • Mimosa somnians var. somnians
  • Mimosa somnians var. velascoensis
  • Mimosa somnians var. viscida


In Guyana, it is used to calm down irritable children via washing.[6]

Mimosa somnians contains (whole plant) about 0.029% tryptamine and about 0.029% methyltryptamine.[7] It is also said[who?] to contain dimethyltryptamine.[citation needed]


  1. "Mimosa somnians information from NPGS/GRIN". www.ars-grin.gov. Retrieved 2008-05-07. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 "Mimosa somnians - ILDIS LegumeWeb". www.ildis.org. Retrieved 2008-05-07. 
  3. 3.0 3.1 3.2 "Full text of "Flora of Yucatan"". www.archive.org. Retrieved 2008-05-08. 
  4. 4.0 4.1 4.2 "Translated version of http://laflor.ifas.ufl.edu/Weeds%20of%20CR/cd/MALEZAS/leguminosas/Mimosa%20somnians.html". translate.google.com. Retrieved 2008-05-08. 
  5. "Mimosa (Genus)". zipcodezoo.com. Retrieved 2008-05-07. [dead link]
  6. Medicinal Plants of the Guianas (Guyana, Surinam, French Guiana), Retrieved 5-07-08
  7. "Journal of Natural Products: Vol.42, Issue 2 (ACS Publications)". pubs3.acs.org. Retrieved 2008-05-07. 

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