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burweed, mosote, Sacramento bur, Sacramento burbark, Sacramento burrbark

Habit Subshrubs.
Stems

erect, branched, 3–17 dm, stellate-pubescent, sometimes with simple hairs intermixed.

Leaves

petiole 0.5–6(–9) cm;

proximal blades broadly ovate to rhombic-ovate, sometimes obscurely 3-lobed, 3–8 cm, distal usually oblong, base rounded, rarely shallowly cordate, margins irregularly serrate-dentate, apex acuminate, surfaces: abaxial (veins and lamina) densely and uniformly stellate-pubescent, 5–7-veined from base.

Inflorescences

2–3 per axil, usually foliar-bracteate;

peduncle 1–2(–3) mm.

Pedicels

2–3 mm.

Flowers

sepals linear, subapically appendaged, 6 mm, stellate abaxially;

stamens 15–25;

ovaries 3(–4)-locular.

Capsules

globose to slightly ovoid, 3–4 mm, surface glabrous or sparsely minutely hirtellous and sparsely and inconspicuously glandular with minute viscid hairs;

spines uncinate, retrorsely barbed.

2n

= 32.

Triumfetta semitriloba

Phenology Flowering May–Dec.
Habitat Hammocks and hammock margins, mulberry woodlands, thicket edges, disturbed sites, old groves
Distribution
from FNA
FL; GA; Mexico; Central America; South America; West Indies [Introduced in Asia (Taiwan), w Pacific Islands (Hawaii, Micronesia, Philippines), Australia]
[WildflowerSearch map]
[BONAP county map]
Discussion

Triumfetta semitriloba is known from the southern counties of Florida, north to Manatee and Okeechobee counties, and in Georgia only from Baker and Camden counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 6, p. 201.
Parent taxa Malvaceae > subfam. Grewioideae > Triumfetta
Sibling taxa
T. pentandra, T. rhomboidea
Name authority Jacquin: Enum. Syst. Pl., 22. (1760)
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