Key to the subspecies of Disperis bolusiana
| 1a | Hood of the median sepal as deep as tall, 3-6 mm deep | subsp. bolusiana |
| 1b | Hood of the median sepal 1,5-2 times as deep as tall, 9-13 mm deep | subsp. macrocorys |
World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/monocots/ accessed 19/09/2020
