Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Solanales
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JK Marlow jkm0407x_15
July Greenville County SC
The plant is dangerously poisonous, per Weakley's Flora.
Roxanna Martin rlm82309_162
August Spartanburg County SC
Funnelform corolla is 7-10cm long, its 5 lobes reduced to slender teeth, per Vascular Flora of the Carolinas.
Gill Newberry gn09_d_stramonium_habit
Leaves ovate, with large, coarse, angular teeth, per Wildflowers of the Southern Mountains.
JK Marlow jkm060902_003
September Greenville County SC
Flowers trumpet-shaped; each flaring lobe ends in a long sharp tooth, per Wildflowers of the Southern Mountains.
Roxanna Martin rlm92709_425
September Spartanburg County SC
Capsule erect, subglobose or ovoid, 2.5-4cm long, spinose, valvate, per Vascular Flora of the Carolinas.
Roxanna Martin rlm102309_068
October Spartanburg County SC
All parts of the plant, esp seeds, dangerously poisonous to man and livestock, per Vascular Flora of the Carolinas.
Richard and Teresa Ware rtw_datura_stramonium_c
Calyx angled with flat sides, 3-5cm long; calyx lobes lanceolate, 5-7mm long, per Vascular Flora of the Carolinas.