Codariocalyx motorius

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Codariocalyx motorius
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Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Codariocalyx
Species:
C. motorius
Binomial name
Codariocalyx motorius
(Houtt.) H. Ohashi
Synonyms
  • Codariocalyx gyrans(L. f.) Hassk.
  • Desmodium gyrans(L.) DC.
  • Desmodium gyrans(L. f.) DC.
  • Desmodium gyrans(L.) DC. var. roylei(Wight & Arn.)Baker
  • Desmodium motorium(Houtt.) Merr.
  • Desmodium royleiWight & Arn.
  • Hedysarum gyransL. f.
  • Hedysarum motoriumHoutt.
  • Hedysarum motoriusHoutt.
  • Meibomia gyrans(L. f.) Kuntze

Codariocalyx motorius (though often placed in Desmodium [1] ), known as the telegraph plant, dancing plant, or semaphore plant, is a tropical Asian shrub in the pea family (Fabaceae), one of a few plants capable of rapid movement; others include Mimosa pudica , the venus flytrap and Utricularia. The motion occurs in daylight hours when the temperature is above 72 °F (22 °C). Many sources claim that the two leaflets move on a common axis (like the blades of a kayak paddle) even though there is no rigid connection between them. [2]

Contents

It is widely distributed throughout Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Sri Lanka, Taiwan, Thailand and Vietnam. It can even be found on the Society Islands, a remote chain of islands in the South Pacific. It produces small, purple flowers. This plant has small, lateral leaflets which move at speeds rapid enough to be perceivable with the naked eye. This is possibly a strategy to maximise light by tracking the sun. [3] [4] Each leaf is equipped with a hinge that permits it to be moved to receive more sunlight, but the weight of these leaves means the plant must expend a lot of energy in moving it. To optimise its movement, each large leaf has two small leaflets at its base. These move constantly along an elliptical path, sampling the intensity of sunlight, and directing the large leaf to the area of most intensity. Another hypothesis has been offered that the rapid movements are intended to deter potential predators. [5] It has also been suggested that these movements may be a form of butterfly mimicry to prevent the laying of butterfly eggs on the plant's leaves. [6]

The common name is due to the rotation of the leaflets with a period of about three to five minutes; this was likened to a semaphore telegraph, a structure with adjustable paddles that could be seen from a distance, the position of which conveyed a message in semaphore, [7] [8] [9] hence the common names.

Branch during day (left) and night (right) Codariocalyx motorius Taub39.png
Branch during day (left) and night (right)

The plant is described in detail in Charles Darwin's 1880 The Power of Movement in Plants .

Usage

Due to its special characteristic that it can "dance", the plant has been used as ornament in gardening, in which some are made as bonsais.

Apart from ornamental value, the plant also has medical value, due to its leaves, stems [10] [11] and roots containing small amounts of tryptamine alkaloids, especially DMT and 5-MeO-DMT.

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References

  1. "Codariocalyx motorius". International Legume Database & Information Service. November 2005. Retrieved December 18, 2007.
  2. Chittendon, Fred J.; Synge, Patrick M. (1965). The Royal Hort. Soc. Dictionary of Gardening - Volume 2. Oxford, Eng.: Clarendon Press. p. 663.
  3. "Codariocalyx motorius (Houtt.) H.Ohashi". University of Connecticut. July 2018.
  4. "CODARIOCALYX MOTORIUS (DESMODIUM GYRANS: LA PLANTA DE BAILE)". Casa de Flores. May 2013. Archived from the original on 2018-07-25. Retrieved 2018-07-25.
  5. Simcha Lev-Yadun. "The enigmatic fast leaflet rotation in Desmodium motorium: Butterfly mimicry for defense?" Plant Signaling & Behavior, 2013. "
  6. Lev-Yadun, Simcha (2013-06-01). "The enigmatic fast leaflet rotation in Desmodium motorium". Plant Signaling & Behavior. 8 (6): e24473. doi:10.4161/psb.24473. PMC   3908938 . PMID   23603964.
  7. "Mystery of the Dancing Plant: Perhaps the Most Mystical Pea Plant since Jack's Magic Beanstalk". The Evergreen State College.
  8. D'Amato, Peter (January 2016). "The Telegraph Plant by Peter D'Amato". California Carnivores. Archived from the original on 2019-03-18. Retrieved 2018-07-25.
  9. Lowry, Connor (July 2013). "Weird and Unusual Plant: The Dancing Plant (Codariocalyx Motorius)". fun flower facts. Archived from the original on 2018-07-25. Retrieved 2018-07-25.
  10. "Codariocalyx motorius (Houtt.) H. Ohashi". asia-medicinalplants.info.
  11. "CODARIOCALYX MOTORIUS (DESMODIUM GYRANS)". casadeflores.es. Archived from the original on 2018-07-25. Retrieved 2018-07-25.