Reinterpretation of Potamogeton xnerviger: solving a taxonomic puzzle after two centuries

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10389861" target="_blank" >RIV/00216208:11310/18:10389861 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.23855/preslia.2018.135" target="_blank" >https://doi.org/10.23855/preslia.2018.135</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.23855/preslia.2018.135" target="_blank" >10.23855/preslia.2018.135</a>

Result language

angličtina

Original language name

Reinterpretation of Potamogeton xnerviger: solving a taxonomic puzzle after two centuries

Original language description

Hybrids form an important component of Potamogeton diversity but their exact taxonomic identities and distributions are often insufficiently known. Potamogeton nerviger was described from Lithuania in 1827 as a proper species. Based on morphological and anatomical characters, its interpretation has since varied, ranging from synonymization with other species to identification as different hybrids and intraspecific taxa. Currently, it is universally recognized as the hybrid P. alpinus x P. lucens. Using a combined molecular, morphological and anatomical investigation we re-examined the identity of P. xnerviger, based on both original and recent plant material. We report a successful amplification and sequencing of nuclear ribosomal ITS1 region from a 188-year-old type collection. This was shown to be genetically identical to the morphologically matching plants recently collected at the type locality. Comparison with molecular characters of the possible parental species shows that P. xnerviger is not P. alpinus x P. lucens, as currently believed, but another hybrid, P. nodosus x P. perfoliatus, which is currently called P. xassidens. This molecular identification is also supported by anatomical evidence. In contrast, the actual existence of the hybrid P. alpinus x P. !wens is doubtful. Consequences for nomenclature and identities of records reported from other sites are discussed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Preslia

ISSN

0032-7786

e-ISSN

—

Volume of the periodical

90

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

15

Pages from-to

135-149

UT code for WoS article

000439008500003

EID of the result in the Scopus database

2-s2.0-85047342104