Witch's broom
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Witch's broom or witches' broom is a deformity in a woody plant, typically a tree, where the natural structure of the plant is changed. A dense mass of shoots grows from a single point, with the resul
Witch's brooms on downy birch, caused by the fungus Taphrina betulina
Witch's broom on a white pine
Witch's broom in Yamaska National Park, Québec
Phyllody
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Phyllody is the abnormal development of floral parts into leafy structures. It is generally caused by phytoplasma or virus infections, though it may also be because of environmental factors that resul
Witch's broom
…Moniliophthora perniciosa, cause of witch's broom disease in cacao Phyllody, a related plant growth abnormality affecting flowers Media related to Witch's broom at Wikimedia Commons…
Phyllody on a purple coneflower (Echinacea purpurea)
Illustration from Vegetable Teratology (1869), showing a Petunia flower with stamens partially replaced by "stalked" leaves. The stalks are actually the retained filaments of the stamens, while the anthers have been replaced by small leaves.
Longitudinal section of a rose flower exhibiting phyllody. Despite the apparent hips, the reproductive organs are completely absent and have been replaced by leaves.
Longitudinal section of a normal developing rose hip