Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
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JK Marlow jkm090404_075
April Walker County GA
The Pocket on Pigeon Mountain
Twigs moderately stout, 4-angled, noticeably winged, brown to gray, per Native Trees of the Southeast, An Identification Guide.
Richard and Teresa Ware rtw_f_quadrangulata_3
Bark gray, furrowed into flattened scaly plates, per Native Trees of the Southeast, An Identification Guide.
Richard and Teresa Ware rtw_f_quadrangulata_15
Leaflets 5-11, short-stalked, per Trees of the Southeastern United States.
Sam Pratt sbp_2765
September Spartanburg County SC
The 4-sided nature of the twigs is most pronounced in juvenile trees, per Woody Plants of the Southeastern US: A Winter Guide.