nyctinasty

nyctinasty
The movement of leaves or petals in response to darkness; the closing of a flower at night.
Syn: nyctinastism, nyctitropism

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  • Nyctinasty — Illustration of sleep movements in Medicago leaves, from: Charles Darwin (1880): The Power of Movement in Plants. Nyctinasty is the circadian rhythmic nastic movement of higher plants in response to the onset of darkness. Examples are the closing …   Wikipedia

  • nyctinasty — ˈ ̷ ̷ ̷ ̷ˌnastē noun ( es) Etymology: International Scientific Vocabulary nyct + nasty; probably originally formed as German nyktinastie : a nastic movement (as the opening and closing of some flowers) that is associated with diurnal changes of… …   Useful english dictionary

  • nyctinasty — nyc·ti·nas·ty …   English syllables

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  • nyctinastic — adjective Relating to nyctinasty the movement of leaves or petals in response to darkness …   Wiktionary

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