Tên Khoa học: Dendrobium draconis Reichb.f.Tên tiếng Anh: Tên tiếng Việt: Nhất điểm hồngTên khác:
Typus. — Myanmar. Moulmein, Parish 131, 132b, Herb. Reichen-bach 32379 (holo-, W).
Habitat, phenology and conservation status.
Epiphyte on tall trees in primary and secondary dry lowland evergreen and semi-deciduous forests and woodlands, often on thin ferralitic soils. 200-1000 m. Fl. January-May.
Expected IUCN Red List status - EN.
Cambodia (Kampong Speu, Kampong Thom, Steung Treng), Laos (Attopeu, Champasak, Savannakhet, Vientiane
Vietnam (Da Nang, Dak Lak, Khanh Hoa, Lam Dong). NE India, Myanmar, Thailand.
Stems cylindrical to narrowly fusiform, (10)15-40(50) cm long, 0.8-1.5 cm in diameter, of many nodes. Leaves ovate to oblong narrowly ovate, 5-10 cm long, 1.5-2.5 cm wide. Inflorescences 1-4(5), each with 1-3(5) flowers. Pedicel and ovary 2.5-3.5 cm long. Flowers tangerine fragrant, widely opening, 4-6 cm across, white, disc and base of the lip bright red, sometimes adaxially yellow. Sepals and petals narrowly ovate, acute 2.5-3.5 cm long, 0.6-1 cm wide; petals slightly wider; mentum narrowly conical to cylindrical, spur-like, curved, 2-2.5 cm long, 2-4 mm in diameter. Lip narrowly ovate, 3-lobed, slightly shorter than sepals, 1.4-1.6 cm wide; side lobes small, half circular, as long as column; median lobe narrowly ovate to ovate, acute to acuminate, much longer than side lobes, strongly undulate and irregularly denticulate along margin; disc with 3-5 low indistinct verruculose keels. Column white, 7-9 mm tall (Fig. 1H).
In the past, it was the most common species of the section all over southern Indochina. Presently it has become endangered in all countries of the region due to wide deforestation and degradation of its native habitats at low elevations