Ayenia limitaris

Cristóbal

Opera Lilloana 4: 61, fig. 17. 1960.

Common names: Texas or Rio Grande ayenia Tamaulipan kidney petal kidney petal
Conservation concern
Synonyms: Nephropetalum pringlei B. L. Robinson & Greenman
Treatment appears in FNA Volume 6. Treatment on page 206. Mentioned on page 204.

Shrubs, erect, to 1.5 m. Stems hairy to glabrate, hairs minutely stellate, ± appressed. Leaves: petiole to 2.5 (–4) cm; blade ovate to ovatelanceolate, unlobed, (3–) 5–12.5 × (1.7–) 3.2–7.5 cm, noticeably reduced in size distally on stem, base rounded to cordate, margins irregularly dentate to dentate-crenate, apex acute to acuminate, 7-veined from base, surfaces: abaxial tomentulose, adaxial sparingly stellate-pubescent. Cymes axillary, not borne on short-shoots (brachyblasts), 2 or 3 (or 4) -flowered; peduncle to 10 mm. Pedicels 3–7 mm. Flowers: sepals caducous, not persistent in fruit, reflexed at anthesis, ovatelanceolate, 3 mm, stellate-pubescent abaxially; petal claws 2.5 mm, lamina reniform, 1 × 1.5 mm, base deeply lobed, lobes ovate-rounded, margins ± entire, apex entire, surfaces glabrous, abaxial appendage absent; androgynophore 0.2–0.3 mm; stamen filaments absent or nearly so; stigmas slightly exserted. Capsules oblate, 6–7 × 8–10 mm, densely short stellate-pubescent, prickles 1–1.5 mm. Seeds 3–5 mm, tuberculate.


Phenology: Flowering summer; fruiting summer–fall.
Habitat: Subtropical thorn woodlands or tall shrublands, calcareous or fine sandy loam to heavy clay alluvial soil
Elevation: 0–30 m

Distribution

V6 367-distribution-map.jpg

Tex., Mexico (Coahuila), Mexico (Tamaulipas)

Discussion

Of conservation concern.

Ayenia limitaris was designated an endangered species by the U.S. Fish and Wildlife Service in 1994. In the flora area, the species is known only from near the mouth of the Rio Grande.

Ayenia limitaris is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Ayenia limitaris"
not +  and appendaged +
stellate-pubescent +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
protruding +
clavate +, cylindric +  and filiform +
Laurence J. Dorr +
Cristóbal +
lobed +, rounded +  and cordate +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
unlobed +, ovate +  and ovatelanceolate +
reduced +
3.2cm;7.5cm +
septicidal +, loculicidal +  and dehiscence +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
stellate-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
filiform +
Texas or Rio Grande ayenia +, Tamaulipan kidney petal +  and kidney petal +
not 3-flowered +
Tex. +, Mexico (Coahuila) +  and Mexico (Tamaulipas) +
0–30 m +
sparse;copious +
actinomorphic +
septicidal +, loculicidal +  and dehiscence +
loculicidal +  and septicidal +
subspheric +  and oblate +
Subtropical thorn woodlands or tall shrublands, calcareous or fine sandy loam to heavy clay alluvial soil +
1-11-flowered +  and cymose +
terminal +  and axillary +
connate +  and distinct +
reniform +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
erose +  and entire +
ovate-rounded +
irregularly dentate;dentate-crenate +
(1-)2-many +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (?) +
5 +  and 4 +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0 cm0 mm <br />0 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering summer +  and fruiting summer–fall. +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Opera Lilloana +
septicidal +, loculicidal +  and dehiscence +
tuberculate +
3mm +  and 5mm +
not persistent +  and caducous +
stellate-pubescent +
ovatelanceolate +
3 cm30 mm <br />0.03 m <br /> (?) +
Conservation concern +
rounded +  and cylindric +
3-7-veined +  and unarmed +
Nephropetalum pringlei +
Ayenia limitaris +
species +