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Sonchus wightianus DC

Sonchus wightianus DC

Family

Compositae

Synonyms

Sonchus arvensis L.

Vernacular Names

Indonesia Tempuyung (Javanese), lempung (Sundanese), jombang.
Philippines Lampaka (Ilocano), lunglung an manema (Ifugao), pisay a otan (Marinduque).
Vietnam Nh[ux] c[us]c d[oof]ng.

Geographical Distributions

Sonchus wightianus is of Asian origin and distributed from Afghanistan through South Asia and Indo-China to Taiwan. It occurs in Malaysia, the Philippines and Indonesia (Java).

Description

This species is a perennial, branched herb, up to 140 cm tall, always with a taproot and sometimes rhizomatic as well. The 5-30 cm x 1-6 cm leaves are rosette and cauline. They are entire to pinnatipartite with more or less triangular lobes and with dentate to spiny margin.

The upper leaves are short, lance-shaped to narrowly triangular. There are 180-300 flowers per head. The involucral bracts are about 40 and densely glandular hairy. The petal tube is 7-8 mm, and with 5-6 mm long ligule.

The fruit is wrinkled, 3.5-4.25 mm x 1 mm, with 1 major and 4 minor ribs on each side. The pappus is about 8 mm long and subpersistent.

Ecology / Cultivation

Sonchus wightianus occurs in humid places such as dikes of paddy fields and irrigation canals up to 3200 m altitude. This species usually flowers and fruits year-round.

Line Drawing / Photograph

Sonchus_wightianus

References

  1. Plant Resources of South-East Asia No.8: Vegetables.

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