Abutilon trisulcatum

(Jacquin) Urban

Repert. Spec. Nov. Regni Veg. 16: 32. 1919.

Basionym: Sida trisulcata Jacquin Enum. Syst. Pl., 26. 1760
Synonyms: Abutilon nealleyi J. M. Coulter A. ramosissimum C. Presl A. triquetrum Sweet
Treatment appears in FNA Volume 6. Treatment on page 227. Mentioned on page 220, 221.

Herbs, annual, sometimes perennial, or subshrubs, 1–2.5 m. Stems erect, prominently 3-sulcate when young, minutely puberulent, usually viscid (especially in inflorescence). Leaves: stipules subulate, 2–4 mm; petiole usually shorter than blade; blade slightly discolorous, ovate, 6–11 cm, longer than wide, base cordate, margins crenulate-serrulate, apex acuminate, surfaces tomentulose, obscured by pubescence. Inflorescences terminal, open panicles. Flowers: calyx 3–4 mm, lobes not overlapping, erect in fruit, lanceolate-ovate; corolla sometimes reflexed, yellow, often with dark red center, petals 4–6 mm; staminal column glabrous; style 5-branched. Schizocarps subcylindric, usually medially constricted, 6–8 × 5–8 mm; mericarps: apex apiculate, minutely puberulent. Seeds 3 per mericarp, 2 mm, minutely pubescent. 2n = 14.

Phenology: Flowering winter–spring.
Habitat: Dry shrublands, disturbed vegetation, roadsides
Elevation: 0–300 m


V6 404-distribution-map.jpg

Tex., Mexico, West Indies, Central America.


Abutilon trisulcatum occurs from Texas to Nicaragua and in the West Indies. It is a common roadside weed in most of Mexico, and has been found in southern Texas in Cameron and Hidalgo counties.

Selected References


Lower Taxa

... more about "Abutilon trisulcatum"
Paul A. Fryxell† +  and Steven R. Hill +
(Jacquin) Urban +
Sida trisulcata +
Tex. +, Mexico +, West Indies +  and Central America. +
0–300 m +
Dry shrublands, disturbed vegetation, roadsides +
Flowering winter–spring. +
Repert. Spec. Nov. Regni Veg. +
Abutilon nealleyi +, A. ramosissimum +  and A. triquetrum +
Abutilon trisulcatum +
Abutilon +
species +