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FNA | Family List | FNA Vol. 21 | Asteraceae | Chromolaena

4. Chromolaena odorata (Linnaeus) R. M. King & H. Robinson, Phytologia. 20: 204. 1970.

Crucita

Eupatorium odoratum Linnaeus, Syst. Nat. ed. 10, 2: 1205. 1759; Osmia odorata (Linnaeus) Schultz-Bipontinus

Perennials or subshrubs, mostly 80–250 cm. Stems erect or sprawling to subscandent, hispidulous to coarsely short-pilose. Petioles 5–20 mm. Leaf blades (3-nerved) narrowly lanceolate to deltate-lanceolate or ovate-lanceolate, 3–10 × 1–4 cm, margins coarsely dentate to subentire. Heads usually 5–50+ in (terminal or lateral) corymbiform arrays. Involucres cylindric, (7–)8–10 mm. Phyllaries in 4–6(–8) series, apices of the inner appressed, rounded to truncate (sometimes slightly white-petaloid or expanded). Corollas purplish to light blue to nearly white or slightly pinkish. 2n = 40, 60, 70.

Flowering mostly Oct–Dec, sometimes year round. Hammocks, thickets, pinelands, cypress-slash pine flats, canal banks, disturbed sites; 0–30 m; Fla., Tex.; Mexico; West Indies.


 

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