Flowers 5-merous , zygomorphic , sessile or short pedicellate .

开花5瓣，左右对称，无梗或短。

Flowers bisexual or polygamous by abortion , zygomorphic or rarely actinomorphic .

花两性或者杂性，左右对称，很少辐射对称。

Flowers bisexual or rarely unisexual and dioecious , actinomorphic or zygomorphic .

花两性或者很少单性并雌雄异株，辐射对称或者左右对称。

Inflorescences terminal . Flowers bisexual , zygomorphic .

花序顶生花两性，左右对称。

Corolla gamopetalous , zygomorphic , rarely actinomorphic ; usually 2-lipped .

花冠合瓣，左右对称，很少辐射对称；通常二唇形。