nyctitropic

[ nik-ti-trop-ik, -troh-pik ]

Phonetic (Standard)IPA

adjective

, Botany.

tending to assume at or just before nightfall positions unlike those maintained during the day, as the leaves or flowers of certain plants.

First recorded in 1875–80; nycti- + -tropic

One species of Phyllanthus takes up in sunshine the nyctitropic attitude of another species.

Both the petiole, and the terminal leaflet of this plant exhibit very marked nyctitropic movement.

The obscurities in the nyctitropic movement of plants arises from the presence of numerous complicating factors.

The description of this Nyctitropic Recorder will be given in the next paper.

The nyctitropic movement of plants affords another example of daily periodicity.

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