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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Floral development and phyllotactic variation in Ceratophyllum demersum (Ceratophyllaceae).
In the central, uncrowded part of the stem, all bundles when traced up words rotate uniformly and describe a helix in the direction of the phyllotactic spiral.
Xiang, "Study on the grinding temperature of the grinding wheel with an abrasive phyllotactic pattern," International Journal of Advanced Manufacturing Technology, vol.
These 20 species include Attalea maripa, which has leaves arranged in five vertical ranks or orthostichies, corresponding to a 2/5 phyllotactic fraction, while most other species of Attalea sensu lato and Cocoseae in general have a 3/8 fraction.