Key to the Eulophia group A
Saprophytic plants with fleshy yellow or pale brown stems.

1 Sepals 35–50 mm long; lip deep maroon-purple  Eulophia macrantha
1a Sepals up to 25 mm long; lip not deep maroon  2
2 Sepals c. 7 mm long  Eulophia gastrodioides 
2a Sepals more than 9 mm long  3
3 Lip lacking papillae; callus 2-lobed  Eulophia richardsiae 
3a Lip with papillae; callus of 3–4 ridges  4
4 Sepals 9–12 mm long; lip with 3 basal crests and the mid-lobe with long papillae; plant drying black  Eulophia eylesii
4a Sepals 15–25 mm long; lip with 3–4 fleshy ridges at base, papillate all over but lacking long papillae; plant drying brown  Eulophia galeoloides

World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 27/07/2019