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common hawthorn
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- In hawthorn: Common species
…are the common hawthorn (Crataegus monogyna) and the smooth hawthorn, also known as whitethorn, (C. laevigata). The smooth hawthorn has given rise to several cultivated varieties with showier flower clusters in pink and red, though it and other ornamental species often suffer from leaf spot, fire blight, and cedar…
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