Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (6/30/18):
Amaranthus australis
FAMILY
Amaranthaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Southern Water-hemp at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Amaranthus australis
FAMILY
Amaranthaceae
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Acnida alabamensis
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Acnida cuspidata
COMMON NAME:
Southern Water-hemp, Southern Amaranth, Careless
To see larger pictures, click or hover over the thumbnails.
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Keith Bradley kab_a_australis_08304
April Monroe County FL
Everglades National Park
This annual is alleged to reach a size of 9m tall & 30cm diameter at the base, per Weakley's Flora.
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (6/30/18):
Amaranthus australis
FAMILY
Amaranthaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Amaranthus australis
FAMILY
Amaranthaceae
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Acnida alabamensis
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Acnida cuspidata
3852
Forb
Annual
Dioecious
Native to Georgia (perhaps) and southward into South America (introduced in NC)
Habitat: Tidal marshes, freshwater wetlands (swamps, strands, sloughs, marshes), ditches, disturbed areas, per Weakley's Flora
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
IS THE PLANT "ARMED"?
Stems not armed
LEAVES:
Simple
Alternate
Petioles 1/3-2/3 length of blade
Margins entire
FLOWER:
Spring/Summer
Unisexual
5 sepals in staminate flowers, absent in pistillate flowers
Petals absent
5 stamens in staminate flowers
Inflorescences mostly terminal, usually interrupted, linear spikes to panicles
FRUIT:
Spring/Summer
Utricle
TO LEARN MORE about this plant, look it up in a good book!