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In Malesia, the leaves of ''L. zeylanica'' may be taken as a sedative, and to heal wounds. The entire plant is rubbed on the abdomen after childbirthchild-birth. The leaves are also used as an anthelminthic. The whole herb has a bitter taste, but is still locally used as a pot herb. 

*An annual herb, 20-60 cm tall, stem and branches hispid; leaves .*Leaves lanceolate, 4-5.5 cm × 1-1.3 cm, margins remotely serrate, membranaceous, hirsute on both surfaces, petiole 0.2-0.8 cm long, hispid; inflorescence .*Inflorescence composed of terminal verticillasters, flowers usually 6-8, forming a globular head, 1.5-2 cm in diameter, occasionally also with axillary verticillasters, bracts linear, 4-5 mm long, spinescent, calyx .*Calyx turbinate, 5-6 mm long, in fruit 7-8 mm, slightly curved, hispid, 10-veined and 8-toothed, posterior one only slightly longer, mouth slightly oblique, corolla 8 mm long, tube with a hairy ring near the middle, upper lip obovate, white-woolly, lower lip patent, 3-4 mm long; nutlets .*Nutlets obovoid, 3 mm × 1 mm, apex truncate, ventral surface angular, dorsal side rounded, smooth and shiny, dark brown or black.  ''L. zeylanica'' is a weed of sunny dry localities, often on sandy soils, paddy dams, waste places, roadsides, from the lowland up to 1000 m altitude.

*[74] Backer,C.A. & Bakhuizen van den Brink Jr, R.C., 1964—1968. Flora of Java. 3 volumes. Noordhoff, Groningen, the Netherlands. Vol. 1 (1964) 647 pp., Vol. 2 (1965) 641 pp., Vol. 3 (1968) 761 pp.*[215] 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.*[788] Pételot, A., 1952—1954. Les plantes médicinales du Cambodge, du Laos et du Vietnam [The medicinal plants of Cambodia, Laos and Vietnam]. 4 volumes. Centre National de Recherches Scientifiques et Techniques, Saigon, Vietnam.*[810] Quisumbing, E., 1978. Medicinal plants of the Philippines. Katha Publishing Co., Quezon City, the Philippines. 1262 pp.

== Main genus page ==* 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.788, 810.[[Leucas (PROSEA)|''Leucas'']]

*Marfu’ah Wardani