单种属植物是某科植物中只有一种的属，如长蕊木兰属于木兰科，为木兰科的单种属植物，即这属中只有长蕊木兰一种。
含笑属植物的导管分子大多具有梯状穿孔板，仅有一种可看到单穿孔板。
In contrast, most of the Michelia species possess scalariform perforation plates and only one with simple perforation.
灰毛菊属的任何一种植物，产于欧洲南部，具有单生包片或银色的头状花序，管状花呈浅紫色。
Any plant of the genus xeranthemum native to southern europe having chaffy or silvery flower heads with purplish tubular flowers.
宝铎草，桔梗科植物一种多年生百合科颚花属植物，原产于北美洲东部，开有单生的、摆动的黄色钟状花。
Any of various perennial plants of the genus Uvularia in the lily family, native to eastern North America and having solitary, nodding, yellow bell-shaped flowers.
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