Vascular Plants of North Carolina
Account for White Thoroughwort - Eupatorium album   L.
Members of Eupatorium with account distribution info or public map:
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Section 6 » Order Asterales » Family Asteraceae
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AuthorL.
DistributionThroughout the state, but apparently scarce or absent from the northern mountains and northeastern outer Coastal Plain.

CT to OH and TN, south to FL and LA.
AbundanceFairly common to common in the southern and central mountains; generally common in the Piedmont and most of the Coastal Plain. Rare to uncommon in the far eastern counties and the northern mountains.
HabitatDry to mesic woodlands, wooded edges, powerline clearings, and other similar sites. In the Coastal Plain it occurs in pine savannas and flatwoods, Longleaf Pine-Wiregrass pea swales, and pine-hardwood forests and woodlands. Tolerant of frequent fires.
PhenologyFlowering and fruiting July-September.
IdentificationAs a group, most thoroughworts and eupatoriums grow 1-3 feet tall, have opposite, toothed leaves, and a branched, mostly flat-topped inflorescence with small white disk florets. White Thoroughwort is unique in having lower leaves distinctly larger than middle and upper ones. Each leaf is elliptical to lanceolate and has a tapered base and tends to curve outward and downward -- with a scalloped margin.
Taxonomic CommentsNone

Other Common Name(s)White Eupatorium, White-bracted Thoroughwort
State RankS5
Global RankG5
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