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Terrestrial, tuberous or pseudobulbous herbs. Leaves 1 to many, basal, appearing with or after the flowers, base contracted into a long petiole. Inflorescence erect, lateral or subterminal, single or laxly to densely many flowered racemes or rarely panicles. Flowers resupinate, small to large, sometimes showy; pedicel and ovary slender. Sepals free, similar; lateral sepals slightly oblique, adnate to column foot. Petals slightly wider to dorsal sepal; lip erect, 3-lobed, lateral lobes embracing column, spurred or saccate. Column short or long, winged; anther terminal, incompletely 2-locular; pollinia 2 or 4, cleft, waxy, viscidium suborbicular.

Key to the species

Serial Key Reference
1a. Pseudobulbs epigeal, scape often branched E. epidendraea
1b. Pseudobulbs hypogeal, scape often unbranched 2
2a. Plants leafless at anthesis 3
2b. Plants with leaves at anthesis 4
3a. Lip 2-3 mm wide, 3-lobed at or below middle. E. graminea
3b. Lip 8-12 mm wide, 3-lobed above middle E. dabia
4a. Anther with two hornlike apical processes 5
4b. Anther without hornlike apical processes E. bracteosa
5a. Pseudobulbs cylindric-globose; sepals elliptic-lanceolate E. promensis
5b. Pseudobulbs flattened, triangular; sepals ovate E. mackinnonii