4. Papilionanthe vandarum (H. G. Reichenbach) Garay, Bot. Mus. Leafl. 23: 372. 1974.
万代凤蝶兰 wan dai feng die lan
Aerides vandarum H. G. Reichenbach, Gard. Chron. 1867: 997. 1867.
Stems pendulous, branched, terete, flexuous, covered by leaf sheaths, to 60 cm; sheaths ridged, overlapping, tubular, 1.5-2.3 cm. Leaves suberect, terete, grooved, acuminate, jointed, 9-25 × ca. 0.3 cm. Inflorescence leaf-opposed, 1-4-flowered; peduncle ca. 2.2 cm, sheathed; floral bracts triangular, 2-4 × 1.4-1.6 mm. Flowers 3.8-5 cm in diam., white with a purple-flushed base to lip and spur, pedicel pink; pedicel and ovary 1.5-3.3 cm. Dorsal sepal obovate-oblong, 2-3.6 × 0.8-1.5 cm, obtuse, margins undulate; lateral sepals similar, ca. 3 × 1 cm. Petals subrhombic, 2-2.5 × 1.1-1.9 cm, reticulately veined, base twisted, margins undulate, apex obtuse; lip 3-lobed, ca. 2.2 × 2.2 cm; lateral lobes erect, unequally bifid, flexuous, narrowly ovate, falcate, ca. 9 × 3 mm, dentate on apical margin; mid-lobe clawed, obovate, dilated and bilobulate at apex, ca. 9 × 9 mm across apex; lobules orbicular, ca. 5 × 4 mm, serrate-denticulate; spur cylindric, base conic, straight, 1.8-2.5 cm. Column fleshy, ca. 6 mm; foot long. Fl. unknown.
Epiphyte. S China [Bhutan, NE India, Myanmar].
This species is included here on the basis of a record from S China (without precise locality) by Pearce and Cribb (Orchids Bhutan, 539. 2002).