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In page Rutaceae:

"

Flowers are bractless, solitary or in cyme, rarely in raceme, and mainly pollinated by insects. They are radially or (rarely) laterally symmetric and generally hermaphroditic. They have four or five—sometimes three—mostly separate petals and sepals and eight to ten stamen (five in Skimmia, many in Citrus), usually separate or in several groups. Usually they have only a single stigma with 2 to 5 united carpels. Their ovaries are sometimes separate, but their styles are combined.[citation needed]