สำนักราชบัณฑิตยสภา

134 The Journal of the Royal Institute of Thailand Volume III - 2011 134 Taxonomic Revision of the Genus Hedychium J. Ko.. nig (Zingiberaceae) in Thailand (Part I) 1891.› H. angustifolium Roxb., Fl. Ind. 1: 11. 1820; H. aurantiacum Roscoe, Monandr. Pl. Scitam.: t. 61. 1825;› H. carneum Y.Y.Qian, Acta Bot. Austro Sin. 9: 48. 1994;› H. coccineum var. angustifolium (Roxb.) Baker in Hook.f., Fl. Br. Ind. 6: 231. 1892;› H. coccineum var. carneum (Roscoe) Baker in Hook.f., Fl. Br. Ind. 6: 232. 1892;› H. coccineum var. longifolium (Roxb.) Baker in Hook.f., Fl. Br. Ind. 6: 231. 1892;› H. coccineum var. roscoei Wall ex. Baker in Hook.f., Fl. Br. Ind. 6: 231. 1892;› H. coccineum var. squarrosum Wall ex. Baker in Hook.f., Fl. Br. Ind. 6: 231. 1892;› H. longifolium Roscoe, Monandr. Pl. Scitam.: t. 59. 1824;› H. roscoei Wall. ex Roscoe, Monandr. Pl. Scitam.: Hedychium verso. 1828;› H. squarrosum Buch.-Ham. ex Wall. in Hook. Kew J. Bot. 5: 372. 1853. Terrestrial, perennial herb. Pseudostems 1.2-1.8 m high, leaf sheaths green, bladeless sheaths 2-3. Ligule oblong, 2.8-3.0 by 1.4-1.6 cm, apex obtuse to shallowly bilobed or acute, pubescent, green. Leaves sessile; blade oblong, 45.0-46.8 by 4.8-5.0 cm, base cuneate, apex acuminate, margin entire, upper surface glabrous, lower surface pubescent. Inflorescence a terminal spike, erect, 15.3-32.7 cm long, hairy; peduncle 6.2-14.1 cm long, hairy; bracts lax, folded, green, oblong, 3.0-4.0 by 1.3-1.6 cm, apex obtuse-acute, hairy, each subtending a cincinnus of 3-5 flowers; first bracteole tubular, 1.7-2.3 by 0.4-0.6 cm, apex acute, hairy, green; second bracteole tubular, 1.2-2.3 by 0.4-0.5 cm, apex acute, membranous, hairy, greenish; third bracteole tubular, 1.0-1.9 by ca. 0.4 cm, membranous, hairy, greenish. Flowers red; calyx tubular, 2.4-3.1 by 0.3-0.4 cm, apex 2-dented, hairy; corolla tube slender, 3.5-3.6 by 0.2-0.3 cm, 3-lobed, lobes linear, 2.7-3.9 by 0.3-0.5 cm, apex hooded, red; lateral staminodes oblanceolate, 2.1-2.9 by 0.6-0.8 cm, base attenuate into a 0.6-1.0 by 0.2-0.3 cm claw; labellum suborbicular, 2.1-2.6 by 1.7-2.0 cm, base attenuate into a 0.6-1.0 by ca. 3 mm claw, apex deeply divided, 0.8-1.2 cm; filament red, 3.8-5.4 cm long; anther dorsifixed, 0.8-1.0 by 0.3-0.4 cm base divaricate, red; ovary 3-5 by 3-4 mm, 3-loculed, placentation axile, pubescent; epigynous glands 2, slender, 2-4 by 2 mm yellowish; stigma densely ciliate, green. Fruits ovoid-oblong, 2.6-3.8 by 2.3-2.5 cm, pubescent, green. Seeds numerous, ovoid-oblong, 4-5 by 2-3 mm, aril reddish orange. Thailand.›NORTHERN: Chiang Rai [Wiang Pa Pao, Ban Khun Lao]; Mae Hong Son [Pai, near Doi Chang; Pang Mapha, Ban Mae Aumong]; Chiang Mai [Doi Suthep; Doi Angkhang; Doi Chiang Dao Wildlife Sanctuary]; Nan [Doi Phu Kha National Park]. 126-149_mac9 4/26/12, 9:15 PM 134