Ypsilopus leedalii P.J.Cribb, Kew Bull. 40: 417 (1985).
A small epiphytic herb. Stem short, c. 4 cm long, covered entirely by sheathing leaf bases. Leaves ligulate, unequally roundly bilobed at apex, up to 7 x 0-9 cm, articulated at an acute angle to the sheathing leaf bases 1 cm long. Inflorescences 5-5 cm long, up to about 10-flowered; bracts amplexicaul, 1-5 mm long. Flowers white; ovary and pedicel scabrid, 3 mm long. Dorsal sepal oblong-elliptic, rounded at apex, 5-5 x 2-5 mm; lateral sepals similar, 6 x 2-8 mm. Petals elliptic, rounded at apex, 6 x 3 mm, margins slightly erose. Lip subquadrate to obovate, obtuse, 8-5-9 mm, apical margins erose; spur tapering to apex, 13-14 mm long. Column 2-4 mm long; anther cap papillose; pollinia 2, spherical attached by a Y-shaped stipes to an elliptic viscidium; rostellum reflexed, bifid, slightly dilated at apex.
Epiphyte in montane forest at elevations around 2200 to 2300 meters.
As given for the genus.
WCSP (2017). 'World Checklist of Selected Plant Families. 15.03.2017; http://apps.kew.org/wcsp/
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