สำนักราชบัณฑิตยสภา

The Journal of the Royal Institute of Thailand Volume III - 2011 133 Pornpimon Wongsuwan and Chayan Picheansoonthon 11.7-12.2 cm, base cuneate, apex acuminate, margin undulate, upper surface glabrous, lower surface sparsely pubescent or glabrous. Inflorescence a terminal spike, erect, 27.6-46.2 cm long; peduncle 17.8-20.0 cm long, hairy; bracts lax, folded, greenish, triangular, 4.6-6.4 by 1.5-1.9 cm, sparely hairy, apex acute, each subtending a cincinnus of 2(-4) flowers; first bracteole triangular, 0.6-1.0 by 0.3-0.6 cm, apex acute; second bracteole triangular, 5-7 by 3-5 cm, apex acute. Flowers white to pale yellow; calyx tubular, 2.2-2.5 cm long, apex 2- dented; corolla tube slender, 3.1-3.4 by 0.2-0.3 cm, 3-lobed, lobes linear, 3.1- 4.2 by ca. 0.2 cm, apex hooded, greenish; lateral staminodes narrowly oblanceolate- oblong, ca. 5.0 by 0.4-0.5 cm; labellum elliptic-oblong, 3.4-3.8 by 1.5-1.6 cm, base attenuate into 3-4 by ca. 3 mm claw, apex deeply divided, 2.0-2.3 cm, white to pale yellow; filament salmon red, ca. 5.3 cm long; anther dorsifixed, 7- 9 by 2-3 mm base divaricate, yellowish; ovary 3-4 by 2-3 mm, 3-loculed, placentation axile, densely hairy; stigma densely ciliate, green. Fruits subglobose-oblong, 1.0-1.2 by 0.8-1.1 cm, 3-ridged, pubescent, green. Seeds numerous, ellipsoid- orbicular, 5-6 by 2-3 mm, aril reddish orange. Thailand.›NORTHERN: Tak [Mae Sot, Khao Pha Wo]. Distribution.›Endemic to Thailand. Ecology.›Lower montane scrub on limestone hill at altitude ca. 750 m. Phenology.›Flowering June-July, fruiting July-August. Note.›This species was described in 1994 as a new taxon with 2- flowered bracts, hence the specific epithet çbiflorumé. However, further investigation of living specimens from the type locality revealed 2-4 flowers per bract. 3. Hedychium coccineum Buch.-Ham. ex Sm. in A. Ress Cycl. 17: 5. 1811 [ Type : Buch. Ham. s.n. (lectotype K)]; Monandr Pl. t. 58. 1828; Reichb. Fl. Exotic 3. t. 184. 1835; Wall. in Hook. Kew J. Bot. 5: 372. 1853; Horan. Mono. Scitam.: 25. 1862; Baker in Hook.f., Fl. Br. Ind. 6: 231. 1892; K. Schum. in Engl., Pflanzenr. 4(46): 51. 1904; Gagnep. in Lecomte, Fl. G é n. I.-C. 6: 71. 1908; T.L. Wu & K.Larsen in Z.L. Wu & PH. Raven, Fl. China 24: 375. 2000. Gandasulium angustifolium (Roxb.) Kuntze, Revis. Gen. Pl. 2: 690. 1891;› G. coccineum (Buch.-Ham. ex Sm.) Kuntze, Revis. Gen. Pl. 2: 690. 126-149_mac9 4/26/12, 9:15 PM 133