Satyrium ligulatum floral features

The pair of curved, cylindrical spurs at the back of a Satyrium ligulatum flower grow from the lip or median petal. The lip is positioned at the top of each non-resupinate Satyrium flower. The spurs, from 5 mm to 10 mm long, point back past the stem, slightly higher than the flanks of the ovary that holds the petals and sepals at its tip.

Low on each flower a thinner organ, the median sepal, curves backwards and more strongly. Each flower also has two more sepals and two more petals laterally, making up the corolla. The tip of the lip, the tips of other petals and lateral sepals turn brown in this species, once the flowers open. The specific name, ligulatum, is derived from the Latin words ligula meaning strap and ligulatus meaning strap-shaped, referring to (either the bract shape or) the dried tips of the tip parts. 

The greenish white ovaries behind the corollas in picture are strongly ribbed and bulky, providing the room for ovule development (Liltved and Johnson, 2012; iNaturalist).