Key: Step 246. 113

113a. Leaves semiterete, longitudinally grooved on upper surface, usually less than 6 mm wide; pseudobulbs usually ovoid, rarely fusiform, 3-12 cm long.

Step 247. 114

113b. Leaves dorsoventrally flattened, largest more than 1 cm wide; pseudobulbs narrowly fusiform to cane-like usually 15 cm or more long.

Step 250. 115
Decision path