Sida acuta (PROSEA)

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Plant Resources of South-East Asia
Introduction
List of species


Sida acuta Burm.f.


Protologue: Fl. ind.: 147 (1768).

Synonyms

Sida carpinifolia (non L.f.) Mast. (1875).

Vernacular names

  • Broom weed, spinyhead sida (En)
  • Indonesia: sidaguri (Javanese), galungang (Sundanese), taghuri (Madurese)
  • Malaysia: bunga telur belangkas, lidah ular, sedeguri (Peninsular)
  • Papua New Guinea: kuriakuria (Vanapa Bridge, Central Province)
  • Philippines: ualisualisan, takkimbaka (Tagalog), pamalis (Tagalog, Bisaya)
  • Cambodia: kantrang ba sa
  • Thailand: naa-khui-mee, yaa khat mon (northern), yung kwaat (central)
  • Vietnam: bái chổi, chổi dực, bái nkọn.

Distribution

Widely distributed in the tropics and common in South Asia.

Uses

In Indo-China and the Philippines, a decoction of the leaves and roots of S. acuta is used against haemorrhoids, impotency and for expelling intestinal worms. The roots are a tonic, used as a stomachic, a diaphoretic, and in some parts of the Philippines for vomiting of blood. In India, the leaves are boiled in oil and applied to testicular swellings and elephantiasis. In the Philippines, the seeds are used to cure enlarged glands and inflammatory swellings.

Observations

  • An erect, branched, nearly glabrous herb or small shrub, 30-100 cm tall with a strong taproot, stems and branches flattened at the tips.
  • Leaves oblong-lanceolate to linear, 2-9 cm × 0.5-4 cm, base acute to rounded, apex acute, margins serrate-dentate, lower surface glabrous or with short stellate hairs, petiole 3-6 mm long, at least one stipule of each pair lanceolate-linear, 1-2 mm broad, often curved, ciliate, the other narrower.
  • Flowers solitary, or densely crowded on side-shoots, 1.3 cm in diameter, pedicel 3-8 mm, petals emarginate, 6-8 mm long, pale yellow.
  • Mericarps 5-8, 3.5 mm long, awns 2, 1-1.5 mm long, glabrous.

S. acuta grows on roadsides, dams, fields, lawns, waste places and teak-forests, common at sea-level but also up to 1500 m altitude. Two subspecies are distinguished: subsp. acuta, with linear to lanceolate leaves, base acute, margins coarsely serrate, indumentum with a few hairs and flowers in clusters of 2-3, and subsp. carpinifolia (L.f.) Borss. Waalk., with ovate to oblong, finely serrate leaves with rounded base, indumentum with many simple hairs and flowers in clusters of up to 8.

Selected sources

74,

  • Burkill, I.H., 1966. A dictionary of the economic products of the Malay Peninsula. Revised reprint. 2 volumes. Ministry of Agriculture and Co-operatives, Kuala Lumpur, Malaysia. Vol. 1 (A-H) pp. 1-1240, Vol. 2 (I-Z) pp. 1241-2444.

143,

  • Council of Scientific and Industrial Research, 1948-1976. The wealth of India: a dictionary of Indian raw materials & industrial products. 11 volumes. Publications and Information Directorate, New Delhi, India.407
  • Holdsworth, D.K., 1977. Medicinal plants of Papua New Guinea. Technical Paper No 175. South Pacific Commission, Noumea, New Caledonia. 123 pp., 739, 785, 786, 788, 810.

Authors

Balu Perumal