Tulipa, Vved ex Zonn. & Veldkamp

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 : 192

4. Sect. Spiranthera Vved. ex Zonn. & Veldkamp in Pl. Syst. Evol. 298(1): 90. (2012).

Type:— Tulipa kaufmanniana Regel in Gartenflora 26: 194, t. 906 figs 6–11. (1877).

Identification key for Tulipa sect. Spiranthera in Uzbekistan

1. Plants widespread in Western Tian-Shan; flowers red, orange, yellow, white or motley, without brown central blotch ..................2

– Plants grow only in western spurs of Hissar Range; flowers orange-red, with a dark brown, widely yellow-margined blotch ......... ............................................................................................................................................................................... 4. T. uzbekistanica

2. Plants of relatively stocky habit (sometimes with almost sessile flowers); leaves curled or undulate, exceeding the flower; anthers almost equal in length with filaments or up to 1.5 times longer, not becoming strongly incurved or twisted; filaments rather thick ............................................................................................................................................................................................ 3. T. dubia

– Relatively tall plants; leaves not curled or slightly undulate, anthers 2–4 times longer than filaments ............................................3

3. Anthers becoming strongly incurved or twisted; filaments yellow, dilated at the base; leaves usually more or less scattered, glabrous, usually not exceeding the flower; widespread in various habitats on all ranges of Western Tian-Shan .............................. ............................................................................................................................................................................. 1. T. kaufmanniana

– Anthers not becoming strongly incurved or twisted; filaments narrow, slightly dilated at the base, yellow with brown apex; leaves relatively approximate, falcately deflected, grooved, more or less pubescent, at the early stages of flowering often exceeding the flower; grows on stony-gravelly slopes of Chatkal and Karzhantau ranges ..........................................................2. T. tschimganica