in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 133. 1836
Etymology: Greek chroma, color, and laina, cloak, evidently alluding to the colored phyllaries of some species, including the type
Treatment appears in FNA Volume 21. Treatment on page 544. Mentioned on page 461, 462, 481.
Perennials or shrubs (sometimes scandent), 20–250 cm (fibrous-rooted). Stems erect or clambering, sparsely to densely branched. Leaves cauline; opposite [alternate, verticillate]; petiolate or sessile; blades usually 3-nerved from bases, mostly deltate to ovate or elliptic, sometimes linear, margins dentate or lobed, faces glabrous or puberulent to tomentose, sometimes gland-dotted. Heads discoid, in corymbiform to thyrsiform arrays. Involucres cylindric [campanulate to hemispheric], 2–7 mm diam. Phyllaries usually readily falling (at least in fruit), 18–65+ in 4–6+ series, 3–5-nerved, ovate to oblong or lanceolate, unequal (papery or herbaceous). Florets [6–]15–40[–75]; corollas white or purple to blue, lavender, or reddish, throats cylindric (lengths 3–4 times diams.); styles: bases not enlarged, glabrous, branches linear to linear-clavate. Receptacles flat to convex, paleate or epaleate. Cypselae prismatic, (3–)5-ribbed, scabrellous, usually gland-dotted as well; pappi persistent, of ca. 40 barbellate bristles in 1 series. x = 10.
se, sc United States, Mexico, Central America, South America (especially Brazil).
Species ca. 165 (4 in the flora).
|1||Leaves: petioles 0 or 0.5–1(–3) mm; blades linear-lanceolate to elliptic-lanceolate, bases tapered; apices of inner phyllaries ± spreading (pinkish purple, hyaline, petaloid, slightly expanded, truncate)||Chromolaena ivifolia|
|1||Leaves: petioles 5–20 mm; blades mostly deltate to ovate-lanceolate, bases ± abruptly contracted; apices of inner phyllaries appressed (not notably expanded or petaloid)||> 2|
|2||Shrubs; heads usually in 3s, sometimes borne singly; involucres turbinate to campanulate||Chromolaena bigelovii|
|2||Perennials or subshrubs; heads in clusters of 5–50+ in (terminal or lateral) corymbiform arrays; involucres cylindric||> 3|
|3||Leaf blades mostly 1.5–4 cm; involucres 5.5–7.5(–8) mm||Chromolaena frustrata|
|3||Leaf blades mostly (3.5–)5–10 cm; involucres (7–)8–10 mm||Chromolaena odorata|
Facts about "Chromolaena"
|Author||Guy L. Nesom +|
|Authority||de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +|
|Distribution||se +, sc United States +, Mexico +, Central America + and South America (especially Brazil). +|
|Etymology||Greek chroma, color, and laina, cloak, evidently alluding to the colored phyllaries of some species, including the type +|
|Illustration copyright||Flora of North America Association +|
|Illustrator||Linny Heagy +|
|Publication title||in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +|
|Publication year||1836 +|
|Source xml||https://email@example.com/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V19-20-21/V21 1380.xml +|
|Taxon family||Asteraceae +|
|Taxon name||Chromolaena +|
|Taxon parent||Asteraceae tribe Eupatorieae +|
|Taxon rank||genus +|
|Volume||Volume 21 +|