Key to the varieties of Satyrium cristatum
| 1a | Lip entrance 3-6 mm tall; spurs 3-7 mm long, usually shorter than the ovary | var. cristatum |
| 1b | Lip entrance 5-7 mm tall; spurs 7-12 mm long, usually longer than the ovary | var. longilabiatum |
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 26.08.2013
