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Collinsonia verticillata
Also called Early Stoneroot, Whorled Horse Balm
Collinsonia verticillata is a species of flowering plant in the mint family known by the common names stoneroot, early stoneroot, whorled stoneroot, and whorled horse-balm. It is native to the United States, where it occurs in the southeastern states, especially the southern Appalachian Mountains, its distribution extending north to Ohio.
This rhizomatous herb has two to three pairs of leaves and an unbranched inflorescence bearing white, pink, or lavender flowers, each with four stamens.
Anise Horsebalm · Richweed · Collinsonia japonica · Blue Ridge Horsebalm · Horsebalm
Text excerpted from the Wikipedia article Collinsonia verticillata by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
