South Texas ambrosia (Ambrosia cheiranthifolia)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

South Texas ambrosia is a herbaceous, perennial plant with erect stems. It is grayish-green in color with yellow flowers.

  • States/US Territories in which the South Texas ambrosia is known to or is believed to occur:  Texas
  • US Counties in which the South Texas ambrosia is known to or is believed to occur:  View All
  • Additional species information
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
08/24/1994 Southwest Region (Region 2)

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
08/24/1994 59 FR 43648 43652 ETWP; Determination of Endangered Status for the Plants Ayenia limitaris (Texas Ayenia) and Ambrosia cheiranthifolia (South Texas Ambrosia)
03/20/2008 73 FR 14995 14997 5-Year Reviews of 28 Southwestern Species
08/05/1993 58 FR 41696 41700 ETWP; Proposed Rule to List the Plants Ayenia limitaris (Texas Ayenia) and Ambrosia cheiranthifolia (South Texas Ambrosia) as Endangered

» Recovery

Other Recovery Documents
Date Citation Page Title Document Type
03/20/2008 73 FR 14995 14997 5-Year Reviews of 28 Southwestern Species
  • Notice 5-year Review, Initiation
Five Year Review
Date Title
12/20/2010 South Texas Ambrosia (Ambrosia cheiranthifolia) 5-year Review

» Critical Habitat

No critical habitat rules have been published for the South Texas ambrosia.

» Conservation Plans

No conservation plans have been created for South Texas ambrosia.

» Petitions

» Life History

Habitat Requirements

South Texas ambrosia is found in grasslands and mesquite dominated shrublands.

Food Habits

South Texas ambrosia is found on various soils ranging from clay loams to sandy loams.

Movement / Home Range

South Texas ambrosia is known from northern Tamaulipas in Mexico, Cameron, Jim Wells, Kleberg and Nueces Counties in Texas.

Reproductive Strategy

South Texas ambrosia flowers from July through November. The plant spreads by rhizomes and one plant may consist of hundreds of stems.

Other

The plant is 4-12 inches (10- 40 centimeters) high with 3 inches (7.6 centimeters) long leaves that are approximately 1.5 inches (4 centimeters) wide. The plantís silky grey pubescence (hair-like structures) makes South Texas ambrosia different from other Ambrosia species.

» Other Resources

NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.