phyllodyn.
/ˈfɪlədi/, U.S. /ˈfɪlədi/ Botany.
1. An abnormal condition in which parts of a flower, esp. the petals or sepals, are changed into leaves or leaflike structures. Also: a disease causing such a condition.
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the world > plants > part of plant > growth, movement, or curvature of parts > [noun] > plant metamorphosis or anamorphosis
anamorphosis1830
antholysis1842
chlorosis1850
metamorphy1869
phyllody1869
phyllomorphy1869
1869 M. T. Masters Veg. Teratol. ii. iii. i. 242 Phyllody of the bracts.—As bracts are very generally imperfect organs, so their replacement by perfect leaves is not attributable to arrest of development or retrograde metamorphosis, but the reverse.
1888 G. Henslow Origin Floral Struct. xxx. 302 (heading) Phyllody of the Carpels and Ovules.
1925 Bot. Soc. & Exchange Club Brit. Isles 7 482 The phyllody of the calyx is shown in T[rifolium]repens, var. phyllanthum Seringe.
1934 J. Grainger Virus Dis. Plants vi. 62 Flowers of infected plants exhibit a marked tendency to phyllody, the perfect flower being replaced by a tuft of leaf-like structures.
1976 Amer. Naturalist 110 279 Limits to the local distribution of pathogens are set by altitude and attendent microclimatic differences (e.g., the distribution of..clover phyllody virus in Rumania).
2000 J. M. McPartland et al. Hemp Dis. & Pests vi. 146 Typical phytoplasma symptoms include chlorosis, dwarfing, and phyllody, which is a distorted hypertrophy of leaves or flowers, also called a rosette or witch's broom.
2. The condition in which phyllodes are present. rare.Apparently only attested in dictionaries or glossaries.
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1906 N.E.D. (at cited word) Phyllody, the condition in which the leaf-stalk is metamorphosed into a phyllode.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1869