Pycnanthemum pilosum Nutt.
Family: Lamiaceae
Hairy Mountain-Mint
[Koellia pilosa (Nutt.) Britton,  more...]
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From Flora of Indiana (1940) by Charles C. Deam

Generally in dry sandy soil, along roadsides, in open woods, and rarely in moist places. This species is a great favorite of the honey bee.