Eulophia calanthoides is an orchid that grows leaves and a flower spike annually from a perennial underground corm. The generic name is derived from the Greek eu (true) and lophos (crested), referring to the lip crests. The specific name calanthoides indicates the similarity of this species to calanthe orchids, another genus of terrestrial orchids.
The plant was at some stage called E. subintegra. There used to be some confusion between this species and E. acuminata, a different species.
Fewer than ten to more than twenty flowers may be found on one spike. Blooming occurs in late spring and summer (JSTOR; Wikipedia).