Eupatorium leptophyllum

de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 176. 1836.

Common names: False fennel
Synonyms: Eupatorium capillifolium var. leptophyllum (de Candolle) H. E. Ahles
Treatment appears in FNA Volume 21. Treatment on page 469. Mentioned on page 463.

Perennials, 50–200 cm. Stems (from short caudices) single, branched distally, glabrous throughout, gland-dotted. Leaves opposite (proximal) or alternate (nodes often appearing leafy by development of leaves on lateral buds without axis elongation); petiolate or sessile; blades (usually pinnately or ternately lobed) or lobes 1-nerved or pinnately nerved, linear, 20–100 × 0.2–0.5(–1) mm, bases slightly expanded, margins entire, apices rounded to acute, faces sparsely puberulent to glabrate, gland-dotted. Heads in paniculiform arrays (branches supporting heads recurved, secund). Phyllaries 6–10 in 1–2 series, lanceolate, 1.5–3 × 0.5–0.7 mm, apices acuminate, mucronate, abaxial faces glabrous or glabrate (not gland-dotted). Florets 5; corollas 2–2.5 mm. Cypselae 1–1.5 mm; pappi of 15–30 bristles 2–2.5 mm. 2n = 20.

Phenology: Flowering Aug–Oct.
Habitat: Pond margins, wet, low places, shallow water
Elevation: 10–50+ m



Ala., Fla., Ga., Miss., N.C., S.C.


Selected References


Lower Taxa

... more about "Eupatorium leptophyllum"
Kunsiri Chaw Siripun +  and Edward E. Schilling +
de Candolle +
False fennel +
Ala. +, Fla. +, Ga. +, Miss. +, N.C. +  and S.C. +
10–50+ m +
Pond margins, wet, low places, shallow water +
Flowering Aug–Oct. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Eupatorium capillifolium var. leptophyllum +
Eupatorium leptophyllum +
Eupatorium +
species +