Satyrium subgen. Satyrium
Slender to stout terrestrial herbs; leaves cauline, or basal and then adpressed to the ground. Bracts most commonly deflexed, rarely spreading or erect, rarely dry and membranous. Petals entire, sometimes with fimbriate margins; lip deeply or shallowly galeate, with broad or very narrow entrance, apical flap short or elongate, spurs mostly slender-filiform and longer than the ovary; viscidia 2, subterminal or lateral, in S. rhynchanthum solitary and terminal; stigma flap-like or in S. rhynchanthum pad-hike; rostellum weakly 3-lobed or unlobed, often with straight or recurved terminal lobe (= appendix).
World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 23/09/2020