Fay, Michael F. Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom.
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An order of flowering plants in the core eudicots. The order consists of 10 families and approximately 9300 species. The circumscription of the order has been relatively stable, with only minor changes made on the basis of deoxyribonucleic acid (DNA) sequence data. The two largest families are Melastomataceae (approximately 4500 species) and Myrtaceae (approximately 3000 species). Thymelaeaceae are excluded in recent concepts of the order, being related instead to families of Malvales. Vochysiaceae, traditionally included in Polygalales, have been shown to be members of Myrtaceae with DNA sequence data.
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