[article]
| Titre : |
Stellaria ruderalis, a new species in the Stellaria mediagroup from central Europe |
| Type de document : |
texte imprimé |
| Auteurs : |
Martin Lepsà (LepÅ¡Ã, Martin), Auteur ; Petr Lepsà (LepÅ¡Ã, Petr), Auteur ; Petr Koutecky, Auteur ; Magdalena Lucanová (Lu%u010Danová, Magdalena), Auteur ; Eva Koutecká, Auteur ; Zdenek Kaplan, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
pp. 391-420 |
| Langues : |
Anglais (eng) |
| Catégories : |
[Espèces (in biblio)] Stellaria
[ZG] Europe centrale
[Thèmes] Taxonomie
|
| Mots-clés : |
Stellaria ruderalis cytométrie Internal transcribed spacer (ITS) caryologie morphométrie multivariée |
| Résumé : |
"A new allotetraploid species in the Stellaria media group, S. ruderalis M. LepÅ¡Ã, P. LepÅ¡Ã, Z. Kaplan & P. Koutecký, which is possibly of hybridogenous origin between S. pallida and S. neglecta, is distinguished and described based on a biosystematic revision of the S. media group. A suite of biosystematic techniques, including molecular (internal transcribed spacer sequencing), karyological (chromosome counting, flow cytometry), multivariate morphometrics and phenological observations, was used to assess the variation in this species group and determine the taxonomic status of the species. All the methods employed produced similar results and supported the delimitation of four species within the Stellaria media group in central Europe: Stellaria ruderalis (2n = 4x = 44), S. pallida (2n = 2x = 22), S. neglecta (2n = 2x = 22) and S. media s. str. (2n = 4x = 40). Stellaria ruderalis is a winter annual growing mainly in disturbed ruderal open or semi-open communities. This species’ broad ecological amplitude allows it to commonly co-occur with its three related species. It is probably a widespread species in southern and central Europe. It is currently spreading in the northern part of central Europe. Photographs of the type specimen and individuals of the new species in situ are presented. Scanning electron micrographs of seeds, microphotographs of seeds and mitotic chromosome spreads and a key for the identification of all four species are provided." (source : auteurs) |
| Type de publication : |
périodique |
| Référence biblio : |
Lepsà M., Lepsà P., Koutecky P., Lucanová M., Koutecká E., Kaplan Z., 2019 - Stellaria ruderalis, a new species in the Stellaria mediagroup from central Europe. Preslia, 91 : 391-420. |
| ID PMB : |
69010 |
| DOI : |
10.23855/preslia.2019.391 |
| En ligne : |
http://www.preslia.cz/doi/preslia.2019.391.html |
| Format de la ressource électronique : |
document |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69010 |
in Preslia > vol. 91 (Année 2019) . - pp. 391-420
[article]
|
Stellaria ruderalis, a new species in the Stellaria mediagroup from central Europe in Preslia, vol. 91 (Année 2019)
