Ixeris polycephala Cass.

Species

Angiosperms > Asterales > Asteraceae > Ixeris

Characteristics

Herbs 10-50 cm tall, annual. Stem solitary, erect, branched already in lower half or higher up, glabrous, leafy. Basal leaves present at anthesis, narrowly oblanceolate, lanceolate, linear-lanceolate, or linear, 6-22 × 0.3-1.5 cm, undivided or pinnatipartite to pinnatisect or runcinately so, base attenuate into a well-developed petiole-like portion and ± semiamplexicaul, margin entire or dentate, apex acute; lateral lobes (if present) 2-5 pairs, on leaf blade basal 1/2-2/3. Stem leaves lanceolate to linear-lanceolate, smaller, rather undivided, base strongly sagittately clasping, margin mostly entire, otherwise similar to basal leaves. Synflorescence corymbiform, with few to some capitula. Capitula with 20-25 florets; peduncle capillaceous. Involucre cylindric and 5-6 × 2-3 mm at anthesis, broadly campanulate and 7-8 × 4-5 mm in fruit. Phyllaries abaxially glabrous; outer phyllaries 4-6, ovate, longest less than 1 mm, apex acute; inner phyllaries 8, apex acute to obtuse. Florets yellow or rarely white. Anther tube and style greenish to blackish upon drying. Achene brown to reddish brown, ellipsoid, ca. 4 mm, apex contracted into a slender 1-1.5 mm beak. Pappus ca. 4 mm. Fl. and fr. Feb-Oct. 2n = 16.
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A herb. It grows each year from seed. It grows 10-50 cm tall. The leaves are narrowly sword shaped and 6-22 cm long by 1-2 cm wide. They can be divided and they can have teeth along the edge.
Life form biennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.4
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a temperate and subtropical plant. It grows on the edges of forests and along streams between 100-2,000 m above sea level. In Sichuan and Yunnan.
More
Wet places by paddy fields, central and southern Japan. Moist shady places at elevations of 700-2100 metres in Nepal.
Light 4-9
Soil humidity 4-9
Soil texture 1-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 6-12

Usage

The young leaves are blanched before eating. They are used in salads.
Uses medicinal
Edible leaves stems
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Ixeris polycephala unspecified picture

Distribution

Ixeris polycephala world distribution map, present in Bangladesh, Bhutan, China, India, Japan, Cambodia, Maldives, Myanmar, Nepal, Pakistan, Korea (Democratic People's Republic of), and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:226412-1
WFO ID wfo-0000000804
COL ID 3QFHF
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ixeris matsumurae Ixeris polycephala f. polycephala Crepis bonii Ixeris fontinalis Chondrilla tenuis Ixeris polycephala Chondrilla fontinalis Lactuca biauriculata Lactuca matsumurae Ixeris dissecta Chondrilla longifolia Ixeris polycephala f. dissecta Lactuca polycephala Ixeris matsumurae var. matsumurae Ixeris polycephala var. polycephala Lactuca matsumurae var. matsumurae Lactuca matsumurae var. dissecta Ixeris polycephala var. dissecta