Sympetalae
（重定向自Sympetalous）
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![Ipomoea purga, a sympetalous flower.](/Images/godic/202502/14/Ipomoea_purga_-_Köhler–s_Medizinal-Pflanzen-0773725.jpg")
Sympetalae Rchb. (1828), meaning “with fused petals”, is a descriptive botanical name used in the Eichler, Engler, and Wettstein systems for a group in the flowering plants. In this group the flowers have a separate calyx and corolla with the petals fused, at least at the base of the corolla, a condition known as sympetaly.