phyllotactic


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Related to phyllotactic: distichous, alternate phyllotaxy

phyl·lo·tax·is

 (fĭl′ə-tăk′sĭs) also phyl·lo·tax·y (fĭl′ə-tăk′sē)
n. pl. phyl·lo·tax·es also phyl·lo·tax·ies
The arrangement of leaves on a stem.

phyl′lo·tac′tic (-tăk′tĭk) adj.
References in periodicals archive ?
thaliana do not show phyllotactic changes suggesting that additional signalling cascades are involved in phyllotaxy.
Some scientists are beginning to tackle an even more difficult problem: Why do some plants show peculiar phyllotactic patterns?
However, the "flowers" still show a mixture of flowerlike and inflorescencelike features: the common stamen-tepal superposition resembles an axillary relationship and can be considered more akin to "inflorescence" than to "flower"; the gynoecium is made up simply of carpels inserted on the floral axis and is consequently just like that of a conventional flower; the phyllotactic sequence of the "flower" is nevertheless continuous through the initiation of the stamen-tepal associations and the gynoecium.
In dicots the cotyledons are often very different in form from the next-formed leaves, and they are usually not in the same phyllotactic pattern.