Texas ayenia (Ayenia limitaris)
Where Listed: WHEREVER FOUND
Texas ayenia is a small shrub and is a member of the chocolate family (Sterculiaceae).
- States/US Territories in which the Texas ayenia is known to or is believed to occur: Texas
- US Counties in which the Texas ayenia is known to or is believed to occur: View All
- USFWS Refuges in which the Texas ayenia is known to occur:
Lower Rio Grande Valley National Wildlife Refuge, Santa Ana National Wildlife Refuge
- Countries in which the the Texas ayenia is known to occur: Mexico
- Additional species information
|Status||Date Listed||Lead Region||Where Listed|
|08/24/1994||Southwest Region (Region 2)|
» Federal Register Documents
|07/01/2014||79 FR 37340||Texas Ayenia Draft Recovery Plan; Correction|
|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|
|03/20/2008||73 FR 14995 14997||5-Year Reviews of 28 Southwestern Species|
|06/25/2014||79 FR 36087 36089||Texas Ayenia Draft Recovery Plan; Notice of availability and request for comment|
|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)|
|Date||Title||Plan Action Status||Plan Status|
|06/03/2014||Draft Recovery Plan for the Tamaulipan Kidneypetal (Texas Ayenia) (Ayenia limitaris)||View Implementation Progress||Draft|
|Date||Citation Page||Title||Document Type|
|06/25/2014||79 FR 36087 36089||Texas Ayenia Draft Recovery Plan; Notice of availability and request for comment||
|07/01/2014||79 FR 37340||Texas Ayenia Draft Recovery Plan; Correction||
|03/20/2008||73 FR 14995 14997||5-Year Reviews of 28 Southwestern Species||
|06/02/2010||Texas Ayenia Completed Five-Year Review|
» Critical Habitat
No critical habitat rules have been published for the Texas ayenia.
» Conservation Plans
No conservation plans have been created for Texas ayenia.
» Life History
The plant is best adapted to partially-shaded sites in shrubby savannas or the edges of brush thickets and arroyos, rather than either the dense shade of unbroken thickets, or open grassland. Typical associated plant species include trees, such as Texas ebony (Chloroleucon ebano), coma (Sideroxylon celastrinum) and anacua (Ehretia anacua), shrubs, such as Vasey’s adelia (Adelia vaseyi), elbowbush (Forestiera angustifolia), crucita (Chromolaena odorata), blue mist-flower (Tamaulipa azurea), and amantillo (Abutilon trisulcatum), herbaceous plants, such as pigeon-berry (Rivina humilis) and tropical sage (Salvia coccinea), and grasses, including four-flower trichloris (Trichloris pluriflora), long-spike silver bluestem (Bothriochloa laguroides subsp. torreyana) and Texas tridens (Tridens texanus).
Texas ayenia has been found in a variety of alluvial soil types, ranging from heavy clay to fine sandy loam.
Movement / Home Range
The known populations range from Soto la Marina, in east-central Tamaulipas, Mexico and 200 miles (320 kilometers) north to Cameron, Hidalgo and Willacy counties, Texas.
Clusters of two or three flowers are formed on short stems arising from the upper leaf axils. The flowers have five green sepals and five pale-green to cream colored, kidney-shaped petals. The fruit is a five-chambered capsule covered with recurved, velcro-like hairs. When mature, the capsules violently split into five segments containing up to one seed each. The seeds are dark grayish brown to black, warty, tear-drop shaped. The plant will flower throughout the year if there is sufficient rainfall.
Texas ayenia is a small shrub, typically from 1 to 3 feet (30 to 92 centimeters) in height. The heart-shaped leaves have finely-toothed margins, and the lower leaf surfaces are densely covered with fine hairs that appear star-shaped under magnification. The older stems are reddish-brown, speckled with numerous white dots (lenticels).
» 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.