Native Plants

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Lynn, Janice

Iva annua

Iva annua L.

Annual Marshelder, Marshelder, Sumpweed, Annual Marsh Elder, Marsh Elder

Asteraceae (Aster Family)

Synonym(s):

USDA Symbol: IVAN2

USDA Native Status: L48 (N)

From the Image Gallery

26 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Shape: Deltoid , Elliptic , Ovate
Inflorescence: Head , Spike
Size Notes: To about 5 feet in height.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: Jul , Aug , Sep , Oct , Nov

Distribution

USA: AL , AR , CO , FL , GA , IA , IL , IN , KS , KY , LA , MA , ME , MI , MO , MS , NC , ND , NE , NM , OH , OK , PA , SC , SD , TN , TX , VA , WI , WV

Benefit

Use Food: Cultivated for its seed by indigenous peoples of eastern North America before the arrival of European crops.
Attracts: Birds

Find Seed or Plants

Order seed of this species from Native American Seed and help support the Wildflower Center.

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FAC		FAC		FAC	FAC		FAC	FAC	FAC

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.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Lady Bird Johnson Wildflower Center - Austin, TX
Brackenridge Field Laboratory - Austin, TX

Herbarium Specimen(s)

NPSOT 1112 Collected Oct 6, 1994 in Bexar County by Harry Cliffe

1 specimen(s) available in the Digital Herbarium

Bibliography

Bibref 1222 - Rivers of Change: Essays on Early Agriculture in Eastern North America (1992) Smith, Bruce D.

Search More Titles in Bibliography

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

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

Metadata

Record Modified: 2022-12-29
Research By: TWC Staff

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