Chromolaena ivifolia
Phytologia 20: 202. 1970.
Common names: Ivy-leaf false thoroughwort
Illustrated
Basionym: Eupatorium ivifolium Linnaeus Syst. Nat. ed. 10, 2: 1205. 1759 (as ivaefoliu)
Synonyms: Osmia ivifolia (Linnaeus) Schultz-Bipontinus
Treatment appears in FNA Volume 21. Treatment on page 544.
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.
"fine" is not a number.
... more about "Chromolaena ivifolia"
introrse +
connate +
spreading +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
glabrous +
decurrent +
3-nerved +
elliptic +
mostly deltate;ovate +
(4-)5-angled;10-ribbed +
linear;linear-clavate +
stigmatic +
barbellate +
coarse +
absent +
Ivy-leaf false thoroughwort +
not 2-lipped +
monomorphic +
(3-)5-ribbed +
scabrellous +
prismatic +
straight +
distinct +
proximal +
15;40 +
bisexual +
dispersed +
singly +
Open woods, edges of fields and woods, roadsides, fencerows, ditches, other disturbed sites, flood plains, bottomlands, along streams +
discoid +
indeterminate +
5;50 +
homogamous +
Present +
surrounding +
cylindric;campanulate +
linear-lanceolate;elliptic-lanceolate +
0.4cm;1.2cm +
opposite +
cauline +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
tough +
thick +
connate +
absent +
0.5-1(-3) mm +
3-5-nerved +
persistent +
distinct +
falling +
unequal +
equal +
Phytologia +
1970 +
absent +
flat;convex +
fibrous +
exalbuminous +
modifed +
4;5 +
Illustrated +
alternate +
branched +
erect +
2-branched +
hirsutulous +
papillate +
Chromolaena ivifolia +
Chromolaena +
species +
cylindric +
perennial +
subshrub +