OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Amaranthus spinosus   FAMILY Amaranthaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Amaranthus spinosus   FAMILY Amaranthaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Amaranthus spinosus

SYNONYMOUS WITH Flora of North America

Amaranthus spinosus

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 066-03-006:

Amaranthus spinosus   FAMILY Amaranthaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Amaranthus spinosus

 

COMMON NAME:
Spiny Amaranth


         To see larger pictures, click or hover over the thumbnails.

image of Amaranthus spinosus, Spiny Amaranth

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_amsp_001_lvd

        

image of Amaranthus spinosus, Spiny Amaranth

JK Marlow    jkm130128_172

January    Spartanburg County    SC

Stems with paired nodal spines, per Weakley's Flora (2012).

image of Amaranthus spinosus, Spiny Amaranth

Keith Bradley    kab_a_spinosus_75384

June    Miami-Dade County    FL

Krome Bird Refuge

image of Amaranthus spinosus, Spiny Amaranth

Keith Bradley    kab_a_spinosus_75400

June    Miami-Dade County    FL

Krome Bird Refuge

image of Amaranthus spinosus, Spiny Amaranth

Richard and Teresa Ware    rtw_amaranthus_spinosus

June        

Simple or compound terminal staminate spikes, usually green to silvery green, per Flora of North America.

image of Amaranthus spinosus, Spiny Amaranth

JK Marlow    jkm130928_680

September    Spartanburg County    SC

Plant freely branched, robust, 5dm or more tall, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Amaranthus spinosus   FAMILY Amaranthaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Amaranthus spinosus   FAMILY Amaranthaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Amaranthus spinosus

SYNONYMOUS WITH Flora of North America
Amaranthus spinosus

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 066-03-006:
Amaranthus spinosus   FAMILY Amaranthaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Amaranthus spinosus

 

Find by SCIENTIFIC NAME:

3582

Forb
Annual
Monoecious

Habitat: Fields, gardens, roadsides, barnyards, pastures, per Weakley's Flora

Non-native: tropical America

Common

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

IS THE PLANT "ARMED"?
Stems armed with paired stipular nodal spines

LEAVES:
Simple
Alternate
Margins entire

FLOWER:
Summer/Fall
Green to silvery-green
1-5 sepals (or sepals absent) subtended by 3 bracts
Petals absent
Unisexual

Flowers in terminal thyrses

FRUIT:
Summer/Fall
Utricle

 

TO LEARN MORE about this plant, look it up in a good book!



 


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