Difference between revisions of "Chromolaena ivifolia"
Phytologia 20: 202. 1970.
Common names: Ivy-leaf false thoroughwort
Basionym: Eupatorium ivifolium Linnaeus
Synonyms: Osmia ivifolia (Linnaeus) Schultz-Bipontinus
Treatment appears in FNA Volume 21. Treatment on page 544.
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|tribe=Asteraceae tribe Eupatorieae | |tribe=Asteraceae tribe Eupatorieae | ||
|genus=Chromolaena | |genus=Chromolaena | ||
Revision as of 15:32, 18 September 2019
Perennials or subshrubs, 50–150 cm. Stems erect, hispidulous to coarsely short-pilose. Petioles 0 or 0.5–1(–3) mm. Leaf blades linear-lanceolate to elliptic-lanceolate, 1.5–7 × 0.4–1.2 cm, margins denticulate to subentire. Heads usually 5–50+ in (terminal or lateral) corymbiform arrays. Involucres cylindric to campanulate, 5–6 mm. Phyllaries in (3–)4–5 series, apices of the inner ± spreading (pinkish purple, hyaline, petaloid, slightly expanded, truncate). Corollas light blue to purplish or reddish. 2n = 50.
Phenology: Flowering Aug–Nov.
Habitat: Open woods, edges of fields and woods, roadsides, fencerows, ditches, other disturbed sites, flood plains, bottomlands, along streams
Elevation: 0–50 m
Distribution
Fla., La., Miss., Tex., Mexico, West Indies, Central America, South America.
Discussion
Selected References
None.
Lower Taxa
None.