Dendrobium scabrilingue Lindl.

Averyanov, Leonid V., Ponert, Jan, Nguyen, Phi Tam, Duy, Nong Van, Khang, Nguyen Sinh & Nguyen, Van Canh, 2016, A survey of Dendrobium Sw. sect. Formosae (Benth. & Hook. f.) Hook. f. in Cambodia, Laos and Vietnam, Adansonia 38 (2), pp. 199-217 : 205

3. Dendrobium scabrilingue Lindl.

Journal of the Proceedings of the Linnean Society, Botany 3: 15 (1858). — Seidenf., Opera Botanica 83: 107, fig. 63, table 14a (1985); 114: 210 (1992). — Newman et al., A Checklist for the Vascular Plants of Lao: 265 (2007). — Schuiteman et al., Nordic Journal of Botany 26: 288 (2008). — Aver., Turczaninowia 16 (4): 36, fig. 3, I (2013).

Dendrobium hedyosmum Batem. ex Hook. f., Botanical Magazine 91: table 5515 (1865).

Dendrobium galactanthum Schltr. , Orchis 9: 93 (1915). — Gagnep., Flore générale de l’Indo-Chine 6 (2): 255 (1933).

TYPUS. — S Myanmar. Tenasserim , “Borneo” – sphalm., Veitch (holo-, K [ K000061906 ]) .

HABITAT, PHENOLOGY AND CONSERVATION STATUS. — Epiphyte on trees in primary and secondary evergreen, broadleaved and mixed mountain forests. 900-1500 m. Fl.: January-February.Rare. Expected IUCN Red List status – DD.

DISTRIBUTION. — Cambodia (Kampot), Laos (Vientiane), Myanmar, Thailand.

MATERIAL EXAMINED. — Cambodia. Kampot, Phnom Bokor N. P., E.Konstantinov et al., 29P-C-GPS042 ( LE).

Laos. Vientiane, Phu Khao Khouai, A.D.Kerr 177, 1820 ( C); Vientiane, Ritaville, A.D.Kerr 2771 ( C).

DESCRIPTION

Stems stout, erect, fusiform,(5)10-25(30) cm long, 1-1.6 cm in diameter,of few to many nodes.Leaves narrowly ovate to oblong lanceolate, 4-8 cm long, 0.8-1.2 cm wide.Inflorescences 1-2(3), each with 1-2 flowers.Pedicel and ovary white, 0.8-1.4 cm long. Flowers fragrant, widely opening, 1.8-2.4 cm across; sepals and petals white; lip white, side lobes green nerved, median lobe yellowish to lemon-yellow. Sepals triangular ovate, obtuse, often slightly recurved, (1.2)1.4-1.8(2) cm long, 5-6 mm wide. Petals narrowly obovate, as long as sepals and slightly wider. Lip obovate, 3-lobed, 1.5-2 cm long, 1.4-1.6 cm wide, clawed at the base; side lobes triangular, erect; median lobe broadly obovate, very rigid, verruculose obtuse; disc with 3-7 thick, low, verruculose, keels, side lobes naked or papillose along nerves. Mentum short, broadly conical, 6-8 mm long and broad. Column light yellowish to yellowish-green, 4-5 mm tall and broad ( Fig. 1E ).

REMARK

Not yet recorded from Vietnam.

Figures

FIG. 1. — A, B, Dendrobium bellatulum Rolfe; A, VH 2566; B, VH 2567; C, D, D. christyanum Rchb.f.; C, VH 950; D, CPC 6038; E, D. scabrilingue Lindl. (Konstantinov 29); F, G, D. suzukii T.Yukawa; F, Duy s.n., III.2014; G, L.Averyanov s.n., XI.2013); H, D. draconis Rchb.f. (HLF 7347); I, D. kontumense Gagnep.(LA-VN 21a). Photos: A-D, G-I, L. Averyanov; E, E. Konstantinov; F, N.V. Duy.