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Lamiaceae

 8-Physostegia inflorescence

[FMP-field: image]
Note the zygomorphic corolla of Physostegia virginiana with the lower lip forming a landing platform for large bees. The anthers of the didynamous stamens are next to the upper corolla lip and deposit pollen onto a bee's back as it enters the flower.
Photo by K. R. Robertson and D. L. Nickrent from plants at Bonnie's Prairie Nature Preserve, Iroquois County, Illinois.
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