Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Amaranthus polygonoides
FAMILY
Amaranthaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Amaranthus polygonoides
FAMILY
Amaranthaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Amaranthus polygonoides
SYNONYMOUS WITH Flora of North America
Amaranthus polygonoides
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Amaranthus polygonoides
COMMON NAME:
Tropical Amaranth, Smartweed Amaranth
To see larger pictures, click or hover over the thumbnails.
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Keith Bradley kab_a_polygonoides_4571
September Miami-Dade County FL
The inflorescences are axillary, congested clusters, per Flora of North America.
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Keith Bradley kab_a_polygonoides_4573
September Miami-Dade County FL
Leaf blade ovate, obovate-rhombic to narrowly ovate, sometimes lanceolate, per Flora of North America.
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Amaranthus polygonoides
FAMILY
Amaranthaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Amaranthus polygonoides
FAMILY
Amaranthaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Amaranthus polygonoides
SYNONYMOUS WITH
Flora of North America
Amaranthus polygonoides
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Amaranthus polygonoides
3853
Forb
Annual
Monoecious
Habitat: Disturbed areas, per Weakley's Flora
Non-native: tropical America
Waif(s)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
IS THE PLANT "ARMED"?
Stems not armed
LEAVES:
Simple
Alternate
Petioles roughly equal length of blade
Margins entire
FLOWER:
Spring/Summer/Fall
4-5 sepals in staminate flowers, 5 in pistillate flowers
Petals absent
Unisexual
Inflorescences axillary, congested clusters
FRUIT:
Spring/Summer/Fall
Utricle
TO LEARN MORE about this plant, look it up in a good book!
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".