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: Caryophyllales
WEAKLEY'S FLORA (11/30/12):
Amaranthus spinosus
FAMILY
Amaranthaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Amaranthus spinosus
FAMILY
Amaranthaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (1968) 066-03-006:
Amaranthus spinosus
FAMILY
Amaranthaceae
COMMON NAME:
Spiny Amaranth
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_amsp_001_lvd
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JK Marlow jkm130128_172
January Spartanburg County SC
Stems with paired nodal spines, per Weakley's Flora.
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Keith Bradley kab_a_spinosus_75384
June Miami-Dade County FL
Krome Bird Refuge
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Keith Bradley kab_a_spinosus_75400
June Miami-Dade County FL
Krome Bird Refuge
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Richard and Teresa Ware rtw_amaranthus_spinosus
June
Simple or compound terminal staminate spikes, usually green to silvery green, per Flora of North America.
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JK Marlow jkm130928_680
September Spartanburg County SC
Plant freely branched, robust, 5dm or more tall, per Vascular Flora of the Carolinas.