Tulipa, Linnaeus, 1753

Tojibaev, Komiljon, Dekhkonov, Davron, Ergashov, Ibrokhimjon, Sun, Hang, Deng, Tao & Yusupov, Ziyoviddin, 2022, The synopsis of the genus Tulipa (Liliaceae) in Uzbekistan, Phytotaxa 573 (2), pp. 163-214 : 166

Identification key for the sections of Tulipa in Uzbekistan

1. Filaments glabrous, all about the same length. Flowers are generally bowl-shaped with a rounded base and colour is predominantly red or yellow.......................................................................................................................................................................................2

– Filaments with hairs at the base and/or wispy hairs along their length. Flowers funnel-shaped, with a slight construction just above the base, and the colour is predominantly white or whitish-yellow ...........................................................................5. Sect. Biflores

2. Anthers opening gradually and slowly (during 2–3 days) from tip to base and becoming contorted; bulb tunic more or less hairy on the inside......................................................................................................................................................... 4. Sect. Spiranthera

– Anthers opening rapidly, not becoming contorted .............................................................................................................................3

3. Leaves are narrow, glaucous. Bulb tunic extends, sometimes up to soil level...........................................2. Sect. Kolpakowskianae

– Leaves are often broad. Bulb tunic not up to soil level......................................................................................................................4

4. Leaves with anthocyan markings. Bulbs with dark brown tunic and inner surface lined with hairs at the tip and often at the base. Inner perigone segments longer then outer ones ..................................................................................................3. Sect. Vinistriatae

– Leaves without anthocyan markings. Bulb with a brown or blackish-brown tunic and inner surface of the tunic usually lined with profusely white hairs over the entire surface. Perigone segments have the same length.......................................... 1. Sect. Lanatae