Launaea acaulis (Roxb.) Babc. ex Kerr

Species

Angiosperms > Asterales > Asteraceae > Launaea

Characteristics

Herbs 10-35 cm tall, perennial, subacaulescent or caulescent, rosulate, glabrous. Rootstock thick, woody, with shoot-bearing roots. Stems few to some, slender, ascending-erect, sparsely branched or simple, leafless or rarely with a few leaves near base. Rosette leaves (sometimes a few extended to basal portion of flowering shoot) spatulate to lanceolate, 5-14 × 0.5-1 cm, base cuneate, margin denticulate and subentire to shallowly sinuate-dentate, apex acute, obtuse, or rounded. Synflorescence sparsely corymbiform, with 1 to a few capitula. Capitula with usually 10-14 florets. Involucre cylindric, 1.2-1.5 cm at anthesis, to 1.7 cm in fruit. Phyllaries with narrow or indistinct scarious margin; outer phyllaries triangular-ovate to lanceolate, longest ca. 1/2 as long as inner phyllaries; inner phyllaries 5-9. Achene whitish, homomorphic, columnar, cylindric, or subfusiform, 4-7 mm, with 5 main ribs, apex truncate. Pappus 6-8 mm, persistent. Fl. and fr. Apr-May. 2n = 18.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.14 - 0.27
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-12

Usage

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

Cultivation

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

Distribution

Launaea acaulis world distribution map, present in Afghanistan, Bangladesh, Bhutan, China, India, Kenya, Lao People's Democratic Republic, Myanmar, Nepal, Pakistan, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:228985-1
WFO ID wfo-0000095807
COL ID 6P4L6
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Prenanthes acaulis Youngia acaulis Prenanthes rigida Prenanthes glabra Lactuca rigida Launaea acaulis Launaea tonkinensis Crepis acaulis Sonchus metzianus Sonchus metzianus Lactuca glabra Microrhynchus glaber Crepis tonkinensis Microrhynchus acaulis Launaea glabra