İki çiçekli çiğdem de denilen crocus biflorusun bir çok alt taksonu vardır. Bunlar:
Crocus biflorus Miller subsp. adamii
Crocus biflorus Miller subsp. albocoronatus Kerndorff
Crocus biflorus Miller subsp. artvinensis (J.Phil.) Mathew
Crocus biflorus Miller subsp. biflorus
Crocus biflorus Miller subsp. crewei (Hooker fil.) Mathew
Crocus biflorus Miller subsp. fibroannulatus Kerndorff
Crocus biflorus Miller subsp. isauricus (Siehe ex Bowles) Mathew
Crocus biflorus Miller subsp. nubigena (Herbert) Mathew
Crocus biflorus Miller subsp. pseudonubigena Mathew
Crocus biflorus Miller subsp. pulchricolor (Herbert) Mathew
Crocus biflorus Miller subsp. punctatus Mathew
Crocus biflorus Miller subsp. tauri
Crocus biflorus Miller subsp. wattiorum B. Mathew
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