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Wedelia chinensis (Osbeck) Merr.

Wedelia chinensis (Osbeck) Merr.

Family

Compositae

Synonyms

Wedelia calendulacea Less.

Vernacular Names

Philippines

Hagonoi-tsina (Tagalog).

Thailand

Ka meng tua phuu (Central), horn kieo kham (Northern).

Vietnam

S[af]i d[aas]t, ng[oor] n[us]i, hoa m[us]c.

Geographical Distributions

Wedelia chi­nensis is distributed from India and Indo-China to Japan, and southwards to Malaysia and the Philippines, where it was introduced.

Description

Wedelia chi­nensis is a slender, spreading herb, 50-80 cm tall that roots at the lower nodes.

The leaves are oblong to oblong-Iance-shaped, measure 2-5 cm x 1-2 cm, wedge-shaped at base, acute at apex, with entire or obscurely serrulate margins where both surfaces are with appressed stiff hairs while the petiole is almost absent.

The inflorescence is a solitary head, with peduncle 6-12 cm long. The heads are about 1 cm in diametre, with 5 involucral bracts, oblong, 8 mm long and soft hairy. The ligulate flowers are 9-11 mm long, approximately equal to the bracts, spreading while the tubular flowers are 4 mm long. 

The fruit is obovoid, and 3.5 mm long with the upper half coarsely hairy. Its pappus is cup-shaped.

Ecology / Cultivation

W. chi­nensis is found on open waste places at sea level.

Line Drawing / Photograph

Wedelia_chinensis

References

  1. Plant Resources of South-East Asia No.12(2): Medicinal and poisonous plants 2.

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