Epilobium laxum Royle

Épilobe à tige carrée (fr), Épilobe à quatre angles (fr), Épilobe tétragone (fr)

Species

Angiosperms > Myrtales > Onagraceae > Epilobium

Characteristics

Herbs perennial, erect, often clumped, with fleshy turions just below ground that leave brown basal scales. Stems 10-70 cm tall, branched or simple, strigillose and sparsely glandular above, glabrous below with raised strigillose lines decurrent from margins of petioles. Leaves sessile above, lower ones with petioles 2-8 mm; cauline blade ovate to broadly lanceolate above to obovate below, 2-7 × 1.2-2.6 cm, subglabrous except for sparsely strigillose margin and midvein, base rounded, margin sharply denticulate with 15-20 teeth per side or subentire below, apex subacuminate. Inflorescence and flowers nodding to suberect. Sepals 4-7.5 mm. Petals bright rose-purple, (7-)10-16 mm. Stigma subcapitate, entire. Capsules 3.5-7.5 cm, sparsely strigillose, erect and appressed to stem; pedicels 0.1-1 cm. Seeds brown, 1.2-1.5 mm, finely papillose, with short chalazal collar; coma white, detaching easily. Fl. Jul-Sep, fr. Jul-Sep. 2n = 36.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.7
Root system fibrous-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 7-9
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

Usage

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

Cultivation

Mode -
Germination duration (days) 14 - 30
Germination temperacture (C°) 10 - 15
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Epilobium laxum world distribution map, present in China, India, Kazakhstan, Kyrgyzstan, Pakistan, and Tajikistan

Identifiers

LSID urn:lsid:ipni.org:names:611997-1
WFO ID wfo-0000669314
COL ID 6FSXZ
BDTFX ID 24182
INPN ID 96192
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Epilobium duthiei Epilobium sadae Epilobium amplectens Epilobium laxum Epilobium subnivale Epilobium tetragonum var. amplectens