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25 February 2019 Euphorbia talassica (E. sect. Esula, Euphorbiaceae), a New Species of Leafy Spurges from the Western Tian-Shan
Georgy A. Lazkov, Alexander N. Sennikov
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Abstract

A species of Euphorbia sect. Esula (Euphorbiaceae) from the Western Tian-Shan, Central Asia, is described as new to science. Euphorbia talassica sp. nova occurs in the Talas Mountain Range in Kazakhstan and Kyrgyzstan, and falls into E. ser. Andrachnoides because of its relatively short and broad leaves. Euphorbia talassica is most similar to E. irgisensis, from which it differs by having a slender and spreading rootstock (vs. a vertical taproot), and incrassate (vs. thin) leaves. The new species also grows at much higher elevations. Euphorbia ser. Andrachnoides is overviewed for Central Asia and adjacent areas, with seven species discussed and mapped.

© Finnish Zoological and Botanical Publishing Board 2019
Georgy A. Lazkov and Alexander N. Sennikov "Euphorbia talassica (E. sect. Esula, Euphorbiaceae), a New Species of Leafy Spurges from the Western Tian-Shan," Annales Botanici Fennici 56(1-3), 135-143, (25 February 2019). https://doi.org/10.5735/085.056.0119
Received: 20 August 2018; Accepted: 15 October 2018; Published: 25 February 2019
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