Study of phylogeny of rare and endemic species as a scientific basis for preservation of biodiversity: Spurges of Northern Asia

Euphorbia talassica (E. sect. Esula, Euphorbiaceae), a New Species of Leafy Spurges from the Western Tian-Shan

“…in Turkmenistan (Nasimova 1983, Nikitin & Geldykhanov 1988, where it was found on pebble conglomerates (Tarassov 1952b). This species seems to be unique in the group because (1933,1949), Pojarkova (1951), Tarassov (1952a), Baikov (1999Baikov ( , 2007, and own data. of its tuber-like roots; it occurs within the distribution area of E. buhsei but readily differs from the latter in its low stature (Pojarkova 1951, Tarassov 1952a.…”

“…Andrachnoides, E. buhsei, seems to be significantly different from the core of the section in both analyses. Baikov (2007) suggested that E. ser. Andra chnoides, as circumscribed by Prokhanov (1964), may be polyphyletic and its xerophytic, broad-leaved species may have resulted from parallel adaptations of different mesophytic, narrow-leaved species to arid conditions.…”

“…As a rule, the species of E. ser. Andrach noides in Central Asia and adjacent areas have relatively narrow distributions and a high level of geographical separation (Prokhanov 1949, Nasimova 1983, Baikov 2007, 2009. They are largely confined to arid areas.…”

“…Field work was conducted in the Western Tian-Shan to complete the information published in the latest checklist of vascular plants of Kyrgyzstan (Lazkov & Sultanova 2014). Taxonomic literature (Prokhanov 1933, 1949, Baikov 2007, 2009 was examined to determine the relationships of the new species.…”