New species of Taraxacum native to central Europe

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F19%3A00521734" target="_blank" >RIV/67985939:_____/19:00521734 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00088382:_____/19:N0000020 RIV/61989592:15410/19:73597397

Výsledek na webu

<a href="http://hdl.handle.net/11104/0306319" target="_blank" >http://hdl.handle.net/11104/0306319</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.23855/preslia.2019.213" target="_blank" >10.23855/preslia.2019.213</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New species of Taraxacum native to central Europe

Popis výsledku v původním jazyce

Further taxonomic exploration of the genus Taraxacum in central Europe was carried out to update the new identification key to the Czech flora. Within three relatively well explored groups new species were revealed, they are described as Taraxacum aspectabile (T. sect. bythrosperrna), T. clandestinum (T. sect. Palustria) and T. sparsum (T. sect. Celtica s. lat.). Taraxacum aspectabile is known to occur in Austria, Bavaria, Czech Republic and Slovakia, usually in grassland growing on alluvial sands but also in other sandy habitats. It is distinct in having deep castaneous-brown to greyish dark brown achenes with a short cone, and numerous triangular lateral leaf segments. Taraxacum clandestinum is confined to a few sites in the Pribram district, south-central Bohemia and is endemic to Bohemia. This rare species is characterized by a robust involucre with numerous but non-imbricate, ovate to broadly ovate outer phyllaries, the absence of pollen, yellow stigmas, and slender, long achenes with a thin, long cylindrical cone. Taraxacum sparsum is known from numerous localities, all in the lowland eastern part of the Bohemian Chalk Plateau. Its distinctive features include leaves with scattered conspicuous brown-purple spots above, the midvein finely striate purplish adaxially, outer phyllaries patent to patent-arcuate, abaxially dark olivaceous brownish green with a narrow white border, and a relatively thick, +/- densely and shortly spinulose achene body, suhabrutly narrowing into a short, conical cone. Taraxacum sparsum is a marginal member of T. sect. Celtica, with some resemblance to members of the section Naevosa. All of these species are polyploid agamosperms.

Název v anglickém jazyce

New species of Taraxacum native to central Europe

Popis výsledku anglicky

Further taxonomic exploration of the genus Taraxacum in central Europe was carried out to update the new identification key to the Czech flora. Within three relatively well explored groups new species were revealed, they are described as Taraxacum aspectabile (T. sect. bythrosperrna), T. clandestinum (T. sect. Palustria) and T. sparsum (T. sect. Celtica s. lat.). Taraxacum aspectabile is known to occur in Austria, Bavaria, Czech Republic and Slovakia, usually in grassland growing on alluvial sands but also in other sandy habitats. It is distinct in having deep castaneous-brown to greyish dark brown achenes with a short cone, and numerous triangular lateral leaf segments. Taraxacum clandestinum is confined to a few sites in the Pribram district, south-central Bohemia and is endemic to Bohemia. This rare species is characterized by a robust involucre with numerous but non-imbricate, ovate to broadly ovate outer phyllaries, the absence of pollen, yellow stigmas, and slender, long achenes with a thin, long cylindrical cone. Taraxacum sparsum is known from numerous localities, all in the lowland eastern part of the Bohemian Chalk Plateau. Its distinctive features include leaves with scattered conspicuous brown-purple spots above, the midvein finely striate purplish adaxially, outer phyllaries patent to patent-arcuate, abaxially dark olivaceous brownish green with a narrow white border, and a relatively thick, +/- densely and shortly spinulose achene body, suhabrutly narrowing into a short, conical cone. Taraxacum sparsum is a marginal member of T. sect. Celtica, with some resemblance to members of the section Naevosa. All of these species are polyploid agamosperms.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

<a href="/cs/project/GB14-36079G" target="_blank" >GB14-36079G: Centrum analýzy a syntézy rostlinné diverzity (PLADIAS)</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Preslia

ISSN

0032-7786

e-ISSN

—

Svazek periodika

91

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

18

Strana od-do

213-230

Kód UT WoS článku

000489025300002

EID výsledku v databázi Scopus

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