Eupatorium album L.

White thoroughwort (en)

Species

Angiosperms > Asterales > Asteraceae > Eupatorium

Characteristics

Stems mostly solitary from a crown or very short, stout rhizome, 4–10 dm, conspicuously spreading-villous at least below (except often in var. vaseyi), often merely villous-puberulent above; lvs opposite, elliptic to elliptic-ovate, lance-elliptic, or elliptic-oblanceolate, sessile or nearly so, 4–13 × 1–4 cm, the larger ones seldom less than 1.5 cm wide except sometimes in var. subvenosum, glandular-punctate, evidently hairy to sometimes subglabrous; infl dense, corymbiform, ± flat-topped; invol 8–11 mm, often with dark sessile glands, otherwise generally glabrous or only slightly hairy, its bracts imbricate, conspicuously white-scarious upward (especially the inner), all narrow and long-acuminate, or the inner with broader, more rounded, mucronate tip; fls 5, the cor white, 4–5.5 mm; 2n=20, 30, 40. Dry, open woods, especially in sandy pinelands; coastal states from s. Conn. to c. Fla. and w. to Miss., also inland in the mt. regions to s. O. and e. Ky. and Tenn., and in Ark. The sp. consists of a widespread, common diploid phase and two more sporadic or local polyploid phases that reflect hybridization with other spp.:
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5 - 1.0
Mature height (meter) 0.95 - 1.75
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-8
Soil humidity 5-7
Soil texture 1-4
Soil acidity 4-8
Soil nutriment -
Hardiness (USDA) 6-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Eupatorium album leaf picture by Ken Borgfeldt (cc-by-sa)

Flower

Eupatorium album flower picture by Ken Borgfeldt (cc-by-sa)

Distribution

Eupatorium album world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:99450-2
WFO ID wfo-0000059784
COL ID 3CJCL
BDTFX ID 25753
INPN ID 97439
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Eupatorium album Eupatorium glandulosum Eupatorium stigmatosum Eupatorium glandulosum Uncasia alba Eupatorium petalodium Eupatorium album var. album Eupatorium album var. glandulosum