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FNA | Family List | FNA Vol. 6 | Malvaceae | Triumfetta

3. Triumfetta semitriloba Jacquin, Enum. Syst. Pl. 22. 1760.

Mosote, burweed, Sacramento burrbark Mosote, burweed, Sacramento burrbark

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.

Flowering May–Dec. Hammocks and hammock margins, mulberry woodlands, thicket edges, disturbed sites, old groves; Fla., Ga.; Mexico; West Indies; Central America; South America; introduced in Asia (Taiwan), w Pacific Islands (Hawaii, Micronesia, Philippines), Australia.

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.

SELECTED REFERENCE Leitão C. A. E. et al. 2005. Anatomy of the floral, bract, and foliar nectaries of Triumfetta semitriloba (Tiliaceae). Canad. J. Bot. 83: 279–286.


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