A new white-flowered species of Gagea (Liliaceae) from the Fergana Valley, Uzbekistan and Kyrgyzstan

Abstract

The article describes the morphological and anatomical features of Gageakhassanovii Levichev, Turginov & W.J.Li, sp. nov., recently described from the Fergana Valley. The species belongs to the section Incrustatae and differs from the species G.circumplexa Vved. in the colour of the flower and the presence of hairs on the leaves of the roots. This species is considered endemic to the Fergana Valley and contributes to the region's floristic uniqueness.

Keywords: Ageotropic sclerified roots; Fergana Valley; etymology; holotype; new species of Gagea; sect. Incrustata.

Figure 1.

A. View of the classic habitat of G.khassanovii (arrows indicate the position of individual); B.G.khassanovii from the foothills of the Alay and C. Chatkal (Sumsar) ranges. Photo: A, B. O.Turginov, C-A. Zhdanko.

Figure 2.

Morphological features of G.khassanovii. A. General view; B. A bulb covered with soil braid of ageotropic sclerified (a) and geotropic feeding with (b) roots; Cross - sections of dry samples; C. The basal leaf (1–5); D. The lower leaf under the inflorescence (6–9, see the marks in A); c, e. sections of the basal leaf (fresh herbarium, c-below the middle, d. in the middle, e-above the middle); E. Section of the peduncle; F. Mature bud; Tepals: f. outer, g. inner.

Figure 3.

Phylogeny inferred by Maximum Likelihood (ML) and Bayesian Inference (BI). The figure is organised into two main parts: the branch length diagram and the detailed phylogenetic tree. Support values displayed on the branches.

Figure 4.

Typical herbarium specimen Gageakhassanovii Levichev, Turginov & W.J.Li, sp. nov.

Figure 5.

Schematic map of the Fergana Valley and habitat G.incrustata, G.circumplexa and G.khassanovii Levichev, Turginov & W.J.Li, sp. nov.