labellum

（兰花的） 唇瓣英释中释nthe part of the corolla of certain plants, esp orchids, that forms a distinct, often lobed, lip

1 Pollinators are often visually attracted by the shape and colours of the labellum ..传粉昆虫通常被唇瓣的形状和颜色的视觉效果所吸引。

2 Appendages on orchid floral labellum that lack floral rewards for pollinators are considered attractive signals to potential pollinators..一些兰科植物常常利用多种多样的欺骗性传粉机制吸引传粉者，唇瓣上的附属物就是其中之一。