Contr. Univ. Michigan Herb. 21: 190. 1997.
Shrubs, erect, 1–2 m, sometimes branching in inflorescence. Stems densely stellate-hairy, hairs tufted, sometimes also with few appressed, simple hairs. Leaves: stipules linear to lanceolate, to 10 × 1 mm, stellate-hairy; petiole 1/2–1 times blade length, stellate-hairy; blade broadly ovate, sometimes shallowly 3-lobed apically, to 12 × 6 cm, gradually reduced and narrower upward, apex acute or acuminate, surfaces with bifurcate hairs abaxially, stellate-hairy adaxially. Inflorescences 2–5-flowered umbels, sometimes appearing compound terminally; peduncle 1–5 cm, stellate-hairy. Pedicels 1–2 cm, stellate-hairy. Flowers: calyx 6–8 mm, lobes triangular, apex acute, stellate-hairy and sometimes hirsute with simple hairs; petals 6–8 mm, glabrous; staminal column 3–4 mm, setose and stellate-hairy; styles 6–8-branched. Schizocarps grayish brown at maturity, 5–9 mm diam., stellate-hairy; mericarps 6–8, spur 2–4 mm. Seeds 2–3 mm. 2n = 30.
Phenology: Flowering year-round.
Habitat: Dry shrublands, roadside ditches, fencerows
Elevation: 300–800 m
Tex., Mexico, West Indies, Central America, South America
In the flora area, Pseudabutilon umbellatum is known only from the lower Rio Grande of southern Texas.
No values specified."/2-1timesbladelength" is not declared as a valid unit of measurement for this property.