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Issue: Vol. 633 No. 2: 5 Jan. 2024
Type: Article
Published: 2024-01-05
DOI: 10.11646/phytotaxa.633.2.5
Page range: 145-154
Abstract views: 207
PDF downloaded: 5

A new, highly endangered and restricted-range species of Parrya sect. Pseudoclausia, comb. nov. (Brassicaceae) from Western Tian Shan, Uzbekistan

South-Siberian Botanical Garden, Altai State University, Lesosechnaya str. 25, 656049 Barnaul, Russia.
Institute of Botany, Academy of Sciences of the Republic of Uzbekistan, Durmon yuli str. 32, 100125 Tashkent, Uzbekistan.
Institute of Botany, Academy of Sciences of the Republic of Uzbekistan, Durmon yuli str. 32, 100125 TashkentInstitute of Botany, Academy of Sciences of the Republic of Uzbekistan, Durmon yuli str. 32, 100125 Tashkent, Uzbekistan.
Chatkal Charvak Reservoir Chorisporeae conservation Cruciferae endemic Middle Asia morphology taxonomy Eudicots

Abstract

Parrya tojibaevii, a morphologically distinct species related to the taxa previously assigned to the genus Pseudoclausia, recognized herein as a section, is described and illustrated. The novelty, known from a few collections, is confined to a small and highly disturbed area around the confluence of Chatkal River with Charvak Reservoir (Western Tian Shan, Uzbekistan) and is morphologically closest to P. gracillima and P. mollissima. The new species can be assessed as critically endangered due to its very narrow and obviously shrinking range and habitat, an easy accessibility of known localities, and a growing threat from the construction of hydroelectric power station, roads and resorts, and also from recreation and grazing.

 

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