Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
WEAKLEY'S FLORA (11/30/12):
Buddleja davidii FAMILY Scrophulariaceae
PLANTS NATIONAL DATABASE:
Buddleja davidii FAMILY Buddlejaceae
VASCULAR FLORA OF THE CAROLINAS (1968) 154-05-002:
Buddleja davidii FAMILY Loganiaceae
SYNONYMOUS WITH Buddleia davidii
Orange-eye Butterflybush, Summer-lilac
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Gill Newberry gn07_buddleja_davidii
Grows 3-15' tall with arching branches, per Invasive Plants, Guide to Identification, Impacts and Control.
Gill Newberry gn07_buddleja_inf
Flowers more or less secund. Corolla salverform, slender tube slightly bent, per Vascular Flora of the Carolinas.
JK Marlow jkm160818_649
August Polk County NC
Flowers white to pink to shades of purple, usually purple w orange centers, per Invasive Plants, Guide to Identification, Impacts and Control.
Paul Thompson pstbuddleia_davidii
There is a felty pubescence on leaf undersides and on young stems. Clemson Extension