สำนักราชบัณฑิตยสภา

The Journal of the Royal Institute of Thailand Volume III - 2011 139 Pornpimon Wongsuwan and Chayan Picheansoonthon apex, greenish-white. Flowers white, fragrant; calyx tubular, 3.7-4.1 by 0.3-0.4 cm, pubescent, apex 3-dented; corolla tube slender, 6.2-6.8 by ca. 3 cm, 3- lobed, lobes linear, apex hooded, thorn-liked, white, 2.5-2.9 by 0.4-0.5 cm; lateral staminodes oblanceolate to broadly oblong-elliptic, 3.7-4.2 by 1.7-1.9 cm; labellum suborbicular, 4.4-5.0 by 4.6-5.4 cm, base attenuate into ca. 1.0 cm claw, white with pale lemongreen patch at base, apex 2-cleft, 1.8-2.2 cm; filament white, 3.4-3.7 cm long; anther dorsifixed, base divaricate, yellowish, 1.2-1.5 by 0.2-0.3 cm; ovary glabrous or sparsely hairy, 4-5 by 2-3 mm, 3-loculed, placentation axile; epigynous glands 2, slender, ca. 2 mm, long yellowish; stigma densely ciliate, green. Fruits ellipsoid-oblong, 2.2-2.6 by 1.8- 2.2 cm, green. Seeds numerous, elliptic-globose, 6-8 by 4-5 mm, reddish orange. Thailand.›Cultivated throughout the country. Distribution.›Widely cultivated throughout tropical countries. Ecology.›Easily grown in moist areas. Phenology.›Flowering in rainy season. Vernacular name.›Maha Hong (¡À“Àß å ), Salata ( –‡≈‡μ ) (Northeastern), Ta Hoen ( 쓇À‘ π ) (Northern). Note.› H. coronarium is easily recognized by its large white flowers and imbricate bracts. It is widely cultivated as ornamental plants. Its flowers are edible and source of perfume. var. chrysoleucum (Hook.) Baker, in Hook.f., Fl. Br. Ind. 6: 226. 1892.› H . chrysoleucum Hook., Bot. Mag. 76: t.4516. 1850;› H. coronarium var. γ . Horan., Monogr. 24. 1862;› H . chrysoleucum Hook., K. Schum. in Engl., Pflanzenr. 4(46): 46. 1904;› H . chrysoleucum Holtt. in Gard. Bull. Sing. 13: 74. 1950;› H . forrestii Diels var. latibracteatum K. Larsen, Bot. Tidsskr. 61: 74. 1965. Figures 5B and 5C. Terrestrial, perennial herb. Pseudostems up to 1.2 m high, bladeless sheaths 3-4. Ligule oblong, 2.8-3.9 by 2.4-3.1 cm, apex rounded-acute or emarginate, membranous, pubescent, greenish. Leaves sessile; blade lanceolate- oblong or elliptic, 21.2-27.2 by 5.7-6.0 cm, base cuneate, apex acuminate, margin entire to slightly undulate, upper surface glabrous, lower surface pubescent. Inflorescence a terminal spike, erect, 4.5-9.5 cm long; peduncle 3.5-5.6 cm long; bracts conical imbricate-elongate, obovate-oblong, 3.6-4.0 by 1.7-2.3 cm, apex acute, pubescent, green, each bract subtending of 4-5 flowers; first bracteole folded, lanceolate, 2.4-2.5 by 0.7-1.0 cm, apex acute, membranous, pubescent, 126-149_mac9 4/26/12, 9:15 PM 139