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This Viburnum grows in a couple-square-mile area north of Adrian. It keys to downy arrow-wood, Viburnum rafinesquianum, a white flowered species. But it is the only population of its kind with pinkish flowers that I know of. The flowers are not fragrant. None of my literature or web references mention pink flowers for the species. I therefore suspect some cultivated mischief here. Typical downy arrow-wood with entirely white flowers also grows in the area. Perhaps the pink ones have acquired a few genes from cultivated spice viburnum or other cultivated varieties. There are other pink flowered Asian and garden Viburnums. The specimen I sent to the University of Michigan Herbarium labelled as V. rafinesquianum has not been corrected to anything else, so this could really be an interesting native color variation.
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