Calyptrochilum christyanum (Rchb.F.) Summerh.

Stem simple, woody, rooting at nodes, leafy, 14–50 cm. long.. Leaves ligulate, unequally bilobed, with sheathing base, coriaceous, fleshy, almost succulent, borne in one plane in 2 alternating rows, (4–)6–8(–13) cm. long, (0.8–)1.5–2(–2.5) cm. broad.. Inflorescences much shorter than leaves, (3–)6–9(–12)-flowered; peduncle and rhachis fractiflex, 1.5–4 cm. long; bracts ovate, apiculate, scarious, 2–4 mm. long.. Flowers scented or not, white or greenish white, fading to apricot; base of lip yellow or green.. Spur yellow at base or entirely green; pedicel with ovary 0.8–1 cm. long.. Dorsal sepal ovate to ovate-elliptic, apiculate, 5–10 mm. long, 2.5–4 mm. broad; laterals similar but slightly oblique, apiculate.. Petals oblong-elliptic, obtuse to apiculate, 5–8 mm. long, 2–3 mm. broad.. Lip distinctly 3-lobed, 7–12 mm. long, 7–10 mm. broad across side lobes; side lobes short, rounded, erect to spreading, 2.5–5 mm. long, 3–5 mm. broad; mid-lobe oblong or ± rectangular, emarginate, 5–7 mm. long and broad, lobules entire or erose, with or without a mucro in the sinus.. Spur conical, strongly geniculate, broad below mouth, constricted in middle, inflated distally, 9–11 mm. long.. Column 1–2 mm. long; anther ovate, apiculate, 2 mm. long and broad.. Pl. 1. Fig. 113.