Native Plants

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.

Enter a Plant Name:
Or you can choose a plant family:

Anderson, Wynn

Laennecia coulteri

Laennecia coulteri (A. Gray) G.L. Nesom

Conyza, Coulter's Horseweed, Coulter's Woolwort, Annual Horsetail

Asteraceae (Aster Family)

Synonym(s): Conyza coulteri, Conyza coulteri var. virgata, Eschenbachia coulteri

USDA Symbol: LACO13

USDA Native Status: L48 (N)

From the Image Gallery

4 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Size Notes: Up to about 5 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White , Pink
Bloom Time: Jan , Feb , Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec
Bloom Notes: Flowering mostly in Fall.

Distribution

USA: AZ , CA , CO , NM , NV , TX , UT

National Wetland Indicator Status

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

Web Reference

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

Additional resources

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

Metadata

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

Go back