Ageratina rothrockii (A.Gray) R.M.King & H.Rob.

Rothrock's snakeroot (en)

Species

Angiosperms > Asterales > Asteraceae > Ageratina

Characteristics

Perennials, (20–)40–70(–150) cm (slender, fibrous-rooted crowns, with slender rhizomes). Stems ascending to erect, puberulent to glabrate. Leaves opposite; petioles 2–20 mm; blades (3–5-nerved) lanceolate to lanceolate-ovate, mostly 3–6 × (1.5–)2–3 cm, bases obtuse to truncate, margins serrate to crenate, apices acute to acuminate, sparsely puberulent abaxially, mostly along nerves. Heads clustered. Peduncles 5–12(–20) mm, puberulent. Involucres 5–7 mm. Phyllaries: apices acute, abaxial faces glabrous or glabrescent, eglandular. Corollas white, lobes short-villous. Cypselae sparsely and finely strigose-hirsute. 2n = 85 [ca. 100, fide A. M. Powell on label].
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4 - 0.7
Root system fibrous-root rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-9
Soil humidity 5-7
Soil texture 1-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-11

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) 1
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Ageratina rothrockii world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:7017-2
WFO ID wfo-0000019570
COL ID 65RY6
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Ageratina rothrockii Eupatorium rothrockii Kyrstenia rothrockii Eupatorium rothrockii var. rothrockii