สำนักงานราชบัณทิตยสภา

The Journal of the Royal Institute of Thailand Volume IV - 2012 53  Sarassa Chandhorn ( สรัสจันทร )- Burmannia coelestris D. Don (Burmanniaceae) A small, herbaceous, annual plant with chlorophyll, autotrophic or semi- mycotrophic. Stems green, slender, when fl owering 10-30 cm tall. Leaves simple, with both basal and stem leaves. Basal leaves few, spirally arranged in a radical rosette at the base of stem, linear to lanceolate, 0.5-2 cm long, apex pointed, recurved. Stem leaves small, bract-like. In fl orescence 1 or 2-6- fl owered; bracts lanceolate, 3-6 mm long. Flowers sky blue, mauve-blue, pale violet-blue or pinkish blue, with yellow tinge at the tops, 1-1.5 cm long, usually solitary or in a group of 2-3 at the end of slender and erect fl owering stalk. Perianth tube actinomorphic, with 3 prominent, lateral wings. Tepals 6, in 2 whorls, outer tepals ovate-triangular, inner tepals triangular. Stamens sessile, arranged in 3 inside the perianth tube. Ovaries ellipsoid to obovoid, trigonous, 3-loculed, with axile placentation. Fruits capsular, obovoid, with persistent perianth, irregularly dehiscent. Sarassa Chandhorn is widely distributed in India, Bangladesh, Southeast Asia and Australia. It is distributed all over Thailand, but is more abundant on the sandstone plateau of the northeastern region at elevations of 150-1,400 m. It grows well in marshy grassland with the wet carpet-like substrate overlaying the fl at sandstone rock formation on the exposed ground fl oor of deciduous dipterocarp forest. It is commonly interspersed in between a variety of herbaceous plants, but rarely exists in dense clumps. Flowering time varies from September to December. The blooming period usually lasts for 2-3 weeks, or longer if the rain-fed water and stream draining water can continuously seep through the wet grassy fi elds. Manee Dheva ( มณีเทวา )- Eriocaulon smitinandii Mold. (Eriocaulaceae) A small, terrestrial, tufted and rooted, annual herb. Stems 3-7 cm tall. Leaves simple, grass-like, narrow, linear, 3-5 cm long, spirally imbricated at bases appearing in a small tuft, leaf apex pointed, slightly recurved, leaf base sheathing. In fl orescence Thawatchai Santisuk