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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Alternanthera maritima

Alternanthera maritima (Mart.) A. St.-Hil.

Seaside Joyweed

Amaranthaceae (Amaranth Family)

Synonym(s): Achyranthes maritima

USDA Symbol: ALMA10

USDA Native Status: L48 (N)


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Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Shape: Oblanceolate , Oblong , Obovate , Oval
Leaf Pubescence: Glabrous
Leaf Apex: Acute , Obtuse
Inflorescence: Axillary
Size Notes: Up to about 6 feet tall, often shorter.
Flower: Stamens 5
Fruit: Utricle.

Bloom Information

Bloom Color: White , Yellow
Bloom Time: Jan , Feb , Mar , Apr , May , Dec
Bloom Notes: Flower is white to straw-colored.


Native Habitat: Sandy beaches, hammocks.

National Wetland Indicator Status

Status: FACW
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 57 - Atlas of Florida Plants (2020) Institute for Systematic Botany
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Alternanthera maritima in USDA Plants
FNA: Find Alternanthera maritima in the Flora of North America (if available)
Google: Search Google for Alternanthera maritima


Record Modified: 2022-11-08
Research By: DEW

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