Tithonia rotundifolia S.F. Blake (redirected from: Tagetes rotundifolia)
Family: Asteraceae
[Tagetes rotundifolia Mill.,  more...]
Tithonia rotundifolia image
Kurt Stueber  

Annuals, mostly 100-200(-400) cm. Leaves: petioles 3-8 cm; blades ± deltate to pentagonal, 7-38 × 7-30 cm, sometimes 3- or 5-lobed, abaxial faces glabrous or soft-pubescent. Peduncles 11-27 cm. Phyllaries 14-21 in (2-)3 series, lanceolate to linear; outer 17-30 × 4-7.5 mm, apices acute, abaxial faces usually densely puberulent; inner 16-28 × 5-8 mm, apices rounded to acute, abaxial faces usually densely puberulent. Paleae 11.5-15 × 2-3 mm, mucros 2.5-5.5 mm. Ray florets 8-13; corollas usually orange, sometimes yellow, laminae oval to oblong, 20-33 × 6-17 mm. Disc florets 60-90. Cypselae 5-7. 2n = 34.

Flowering Nov.-Jan. Disturbed sites; 0-20+ m; introduced; Fla., La.; Mexico; West Indies; Central America.

Tithonia rotundifolia is widely cultivated in warm climates and may persist after plantings (e.g., in Asia).

Tithonia rotundifolia image
Kurt Stueber  
Tithonia rotundifolia image
Kurt Stueber  
Tithonia rotundifolia image
Kurt Stueber  
Tithonia rotundifolia image
Mauricio Mercadante