Eulophia pratensis

Terrestrial herbs, flowering stem appearing before the leaves, 35-50 cm high with a few sheathing scales, slightly swollen at their attachment to the stem; quite glabrous, green or purplish. Leaves long petioled, 25-30 cm long. Racemes to 15 cm long; bracts lanceolate, acute, 1 cm long: ovary plus stalk ¾ inch. Sepals elliptic, oblong, yellowish outside, purple inside, five-nerved; lateral sepals attached by their bases to the shortly projecting base of the column, on to which also run the front edges of the two petals. Petals obovate-oblong, yellow, nearly as long as the sepals. Side lobes of lips embracing the column, each as wide as the middle lobe: middle lobe with three or four crested ridges running towards the opening of the short, triangular, backward pointing spur. Column deeply grooved, with the sides meeting across the middle at the top; rostellum sloping downwards. Anther cap with a short projecting point, quite free. Pollinia two, attached by thin elastic bands to the removable part of the rostellum, globose. Capsule 3 cm long, elliptic, turgid.

References:

The Plant List Ver.1.1  WCSP  IPNI  India Biodiversity Portal  Kerala Plants