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Physostegia parviflora Nutt. ex A. Gray - western false dragonhead
PHPA10

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 117. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Requirements.

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