Nervilia concolor (Blume) Schltr.

Selembar sebulan (Nervilia concolor) is an orchid up to 20-30 cm tall from the Orchidaceae family spread from China and India to Australia and the Pacific. In Thailand, its pseudobulbs are used to address heart function disorders, while a decoction of its leaves is known as a mandatory postpartum 'meroyan medicine' in Malaya. Hunting for medicine and ornamental use has made this rare orchid increasingly difficult to find.

Terrestrial orchids in their habitat are usually found in more than one or in groups, and can be found in lowland forests up to an elevation of 2,300 m asl. Grows best in humid semi-shade.

• Roots fibrous.
• Tuber hard, fleshy and juicy, subglobose to ovoid, 1-1.7 cm in diameter.
• Stem purple, 13.5 cm long.
• Leaves bright green, heart-shaped or kidney-shaped but appearing nearly circular, 15-25 cm in diameter with wavy margins and prominent radiating veins.
• Flowers between two and six flowers, pale green, 3.5-4 cm long and 3-3.5 cm wide, arranged on an upright stem 20-35 cm tall. Sepals 1.7-2.4 cm long and about 2 mm wide, petals nearly the same but slightly shorter. Labellum has three lobes and is cream or yellowish with purple or green hairy veins. Side lobes curve inward and the middle lobe has a wavy margin and three hairy protrusions. The flower lasts only up to four days, after which one leaf develops, including on plants that do not flower.

Propagation generatively by seed and vegetatively by tuber division.

Alkaloids, glycosides, saponins, phenolic compounds, amino acids, tannins, and flavonoids.

Has anti-inflammatory, antipyretic, antiseptic, cooling, diuretic, galactagogue, ophthalmic and tonic activity, increases milk production, treats swelling, vaginal discharge, menorrhagia, mental instability, epilepsy, hemoptysis, colic, diarrhea, vomiting, asthma, coughs, fever, urinary complaints and weak kidneys, heart function disorders, treats bronchitis, stomatitis, acute pneumonia, sore throat, and a mandatory protective remedy after childbirth.

No information found. Further research needed.