Eulophia zeyheriana flower

The flower of Eulophia zeyheriana has the characteristic prominent fleshy ridge as a lip crest that marks the Eulophia genus. In picture the crest broadens from just one row of white, warty protrusions at the back, to five rows where it abruptly ends in the front, some distance from the end of the lobed lip. The outer two rows of this crest face to the sides, less noticeable than the forward sections of the middle three rows that are here separated by deep channels. The marginal tubercles around the front of the crest are tipped with purple. The two blue-striped sections beside the lip are lobes or segments of the lip itself.

The three reddish purple sepals at the back of the flower are oblong, especially the lateral ones, before tapering near the end to acute tips. The lateral petals are broad, white and slightly two-lobed, sagging here over the inner flower parts. Their front margins show a little reddish purple colouring as well. The spur becomes 2 mm to 3 mm long.

The round, purple edged dot inside the flower at the back is the anther cap, positioned near the top of the column on which the stamens and style are situated. The stigmatic surface lies just below this dot (Manning, 2009; Pooley, 1998; iNaturalist; iSpot).