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Article from Bean's Trees and Shrubs Hardy in the British Isles
'+ Pyrocydonia' from the website Trees and Shrubs Online (treesandshrubsonline.
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A genus of graft-hybrids between Pyrus and Cydonia. It was included in × Pyronia by Rehder, but under modern rules of nomenclature this name must be restricted to sexual hybrids between the two genera. For other examples of graft-hybrids see + Crataegomespilus and + Laburnocytisus.