Tithonia diversifolia
Asteraceae tribe heliantheae subtribe helianthinae
Mexican sunflower weed, tree marigold
petioles 2–6 cm;
blades ± deltate to pentagonal, 7–33 × 7–22 cm, sometimes 3- or 5-lobed, abaxial faces glabrous to hispid-pilose.
7–24 cm.
7–14;
corollas yellow, laminae linear, 48–69 × 9–16 mm.
80–120+.
16–28 in (3–)4 series, oblong to ovate;
outer 6–10 × 4–7 mm, apices rounded to acute, abaxial faces usually glabrous;
inner 10–20 × 3–10 mm, apices rounded to acute, abaxial faces glabrous.
4–6 mm.
10–13 × 2–3 mm, mucros 1.5–2.5 mm.
= 34.
Tithonia diversifolia
Asteraceae tribe heliantheae subtribe helianthinae
FL; TX; Mexico [Introduced in North America; also introduced in West Indies, Central America, Asia, Africa, Atlantic Islands, Indian Ocean Islands, Pacific Islands, Australia]
Tithonia diversifolia is widely cultivated in warm climates and may persist after plantings; a report for Louisiana was not confirmed for this treatment.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
WildflowerSearch
iNaturalist
USDA Plants Database
