Sarcochilus serrulatus D.L.Jones, Victorian Naturalist 89: 344, f. 1 (1972). Type: East Evelyn Tableland, North Queensland, at 980 metres, 31 July 1972, D.L. Jones, B. Gray and R. Collins s.n. (holo MEL; iso BRI, MEL).
Occurs in north-eastern Queensland from the Mount Windsor Tableland to the Evelyn Tableland.
Altitude: 900-1600 m.
Epiphytic or lithophytic herb forming small clumps. Plants usually consisting of a single semi-pendulous growth. Stem porrect to pendulous, 1-2 cm long. Leaves 3-6, crowded, scattered along stem, prostrate to pendulous, distichous, alternate, sessile, bases sheathing stem, imbricate; lamina oblong, falcate, 5-10 cm x 2 cm, mid green to dark green, margins undulate, finely serrulate, apex unequally emarginate. Inflorescence an axillary raceme, 20-40 mm long, club-shaped, fleshy; pedicels 4-5 mm long. Flowers 2-10, resupinate, porrect, 14-18 mm x 12-15 mm, reddish brown with white and yellow bands on labellum. Sepals and petals widely spreading, bases narrowed. Dorsal sepal almost circular, 5-6 mm x 5-6 mm. Lateral sepals broadly obovate, 5-7 mm x 3-4 mm, bases fused to column foot. Petals spathulate, almost circular, 5-6 mm x 2-3 mm. Labellum projected forward, 4 mm x 4 mm, white with reddish brown and yellow markings; lateral lobes erect, 4 mm x 2 mm, incurved; midlobe 1 mm long, fleshy, shallowly emarginate; spur 3 mm long, obtuse. Column 2 mm long. Column foot 2.5 mm long, at right-angles to column. Capsules porrect to pendulous, dehiscent.
Occurs in dense highland rainforests, in thick vegetation on slopes above streams and on shrubs and trees beside small streams.
Flowering period: August-January.