สำนักราชบัณฑิตยสภา

263 Pornpimon WONGSUWAN and Chayan PICHEANSOONTHORN วารสารราชบัณฑิตยสถาน ปีที่ ๓๗ ฉบับที่ ๑ ม.ค.-มี.ค. ๒๕๕๕ Thailand. _ NORTHERN: Mae Hong Son [Pang Mapha; Pai, Doi Kiew Lom]; Chiang Mai [Doi Suthep-Pui National Park; Doi Angkhang; Doi Chiang Dao Wildlife Sanctuary; Doi Inthanon National Park]. Distribution. _ Nepal, Bhutan, India (Assam), China (Yunnan), Myanmar, Vietnam. Ecology. _ Lower montane scrub or lower montane pine-oak forest, at the altitude of 1,000- 1,500 m. Phenology. _ Flowering from August-September, fruiting from September-November. Vernacular name. _ Kaw Ya-ea ( คอยาอึ ), (Mae Hong Son). Note. _ This taxon is one of the Hedychium species which can grow well up to 1.5-2.5 m high. The inflorescence is exceptionally long (up to 52.3 cm) with a hairy rachis and 7-11 white flowers per bract. Young inflorescence is edible. 20. Hedychium tomentosum Sirirugsa & K. Larsen, Nord. J. Bot. 15: 303, Fig. 1 E-I. 1995 [Type: Thailand: Chiang Mai, Doi Chiang Dao; Beusekom & Phengklai 1348 (holotype C)]. Figures 10 and 11. Epilithic, perennial herb. Pseudostems 15.0-58.4 cm high, leaf sheaths red, bladeless sheaths 2-3, tomentose. Ligule oblong, 1.4-2.2 by 1.2-3.1 cm, apex rounded, membranous, tomentose, reddish. Leaves sessile, blade elliptic-broadly elliptic, 18.9-32.8 by 9.2-15.1 cm, base cuneate-obtuse, apex acute-acuminate, margin entire-slightly undulate, upper surface glabrous, lower surface tomentose. Inflorescence a terminal spike, erect, 9.4-16.2 cm long, glabrous-pubescent; peduncle 5.2-6.8 cm long, glabrous- pubescent; bracts dense, folded, reddish or greenish, lanceolate-oblong, 2.3-2.9 cm by ca. 8 mm, apex acute-rounded, tomentose, each subtending a cincinnus of 1 flower; bracteole lanceolate-oblong, 1.3-1.7 cm by 7-9 mm, apex acute, tomentose, greenish or reddish. Flowers white to pale yellow, fragrant; calyx tubular, 3.2-3.7 cm by 3-4 mm, apex 2-3-dented, tomentose; corolla tube slender, 7.2-7.9 cm by 2-3 mm, 3-lobed, lobes linear, 3-3.2 cm by 4-5 mm, apex hooded, white-yellowish, sometime reddish; lateral staminodes lanceolate-oblong, 2.8-3.3 cm by 4-5 mm; labellum elliptic-lanceolate, 2.9-3.1 by 1.1-1.3 cm, apex deeply divided, margin entire to slightly undulate, white-yellowish; filament 3-3.2 cm long, white-pale yellow; anther dorsifixed, 7-8 by 3-4 mm, base divaricate, yellowish; ovary 4-5 by 2-3 mm, 3-loculed, placentation axile, tomentose; epigynous glands 2, ca. 3 mm long, yellowish; stigma ca. 1 by 1 mm, densely ciliate, green. Fruits ovoid-oblong, 2.1-2.5 by 1.5-1.8 cm, hairy, scarlet. Seeds numerous, ellipsoid, 3-4 by ca. 2 mm, aril white.