phyllotacticadj.
/ˌfɪlə(ʊ)ˈtaktɪk/, U.S. /ˌfɪləˈtæktɪk/ Botany.
Of or relating to phyllotaxis.
ΘΚΠ
the world > plants > part of plant > (defined by) distribution, arrangement, or position > [adjective] > belonging to phyllotaxy
phyllotactic1857
phyllotactical1888
1857 A. Henfrey Elem. Course Bot. §140 [In the Flower] the leaves, arranged according to the general phyllotactic laws, are more or less changed in form and texture.
1891 Bot. Gaz. 16 159 (title) Abnormal phyllotactic conditions as shown by the leaves or flowers of certain plants.
1960 K. Esau Anat. Seed Plants xviii. 267 In chapter 16 the views on the causal relations in the orderly initiation of foliar primordia, resulting in characteristic phyllotactic patterns, have been mentioned.
1994 Science 3 Sept. 81/2 The reasons for inclined grain have been debated for at least 50 years. Two common theories related it to the phyllotactic spiral of primordia in shoot apices.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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adj.1857