Proc. Amer. Acad. Arts 21: 446. 1886. 1886
Herbs or subshrubs, usually perennial, to 1 m. Stems erect, minutely stellate-tomentulose, hairs yellowish. Leaves: stipules subulate, 5–9 mm; petiole 1 / 2 to as long as blade; blade concolorous, suborbiculate to ovate, 3–7 cm, ± as long as wide, base cordate, margins sharply serrate, apex acuminate, surfaces minutely tomentulose, obscured by pubescence. Inflorescences terminal, compact panicles. Flowers: calyx 6–8 mm, lobes not overlapping, erect in fruit, lanceolate-ovate; corolla rotate, yellow throughout, petals 9–15 mm; staminal column pubescent; style 5-branched. Schizocarps ± cylindric, 6–7 × 6–7 mm; mericarps: apex usually acute, surface coarsely stellate-pubescent. Seeds 3 per mericarp, 2 mm, puberulent but appearing glabrous. 2n = 14.
Phenology: Flowering summer.
Habitat: Arid habitats, hillsides, plains, canyons
Elevation: 300–1500 m
Ariz., N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (San Luis Potosí), Mexico (Sonora), Mexico (Zacatecas)
Abutilon malacum is found in southwestern Arizona, southwestern New Mexico, and the Big Bend area of Texas.
"wide" is not a number.