| 1 | Style divided into at least six branches; anthers 6-8 mm long; flowering time November (-January) |
| 1' | Style divided into 3 branches; anthers 7-12 mm long; flowering time January-April |
| 2 | Anthers dark purplish-maroon; perianth segments 2.2-2.7 cm long; leaves equalling or exceeding the flower at anthesis; corm tunic splitting into parallel fibres for most of its length |
| 2' | Anthers yellow; perianth segments 1.5-3.5 cm long; leaves only shortly developed at anthesis, sometimes reaching the base of the flower; corm tunic largely membranous, splitting into parallel fibres only near the base, and basally circumscissile, producing horizontal rings |
