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Issue: Vol. 471 No. 3: 17 November 2020
Type: Article
Published: 2020-11-17
DOI: 10.11646/phytotaxa.471.3.2
Page range: 193–207
Abstract views: 68
PDF downloaded: 1

Althenia tzvelevii (Potamogetonaceae), a new species from SW Western Australia with bilocular anthers: morphology and molecular phylogenetic relationships

Western Australian Herbarium, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre WA 6983, Australia
Faculty of Biology, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234 Moscow, Russia
A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, GSP-1, Leninskie Gory, Moscow 119991, Russia
A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, GSP-1, Leninskie Gory, Moscow 119991, Russia
Faculty of Biology, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234 Moscow, Russia
Faculty of Biology, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234 Moscow, Russia
Monocots Althenia Australia Potamogetonaceae Alismatales phylogeny floral morphology

Abstract

A new species Althenia tzvelevii is described from south western Australia. This is the second species after A. bilocularis described with bilocular anthers. Illustrations of plant morphology are provided by means of SEM images and habitat photographs are included. The phylogenetic relationships of the new species were investigated using five plastid DNA markers (matK, ndhF, rbcL, rpoB, and rpoC1), with published sequences augmented by several new sequences resulting in coverage of all described species in the genus. Althenia tzvelevii forms a clade with A. patentifolia and A. bilocularis and other relationships within the genus are clarified. The Western Australian Althenia hearnii is strongly supported as sister to the Eurasian-African clade composed by A. filiformis and A. orientalis.

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