Suaeda corniculata (Chenopodiaceae) and related new taxa from Eurasia

• Autores: Maria Lomonosova, Ronny Brandt, Helmut Freitag
• Localización: Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem, ISSN 0511-9618, ISSN-e 1868-6397, Vol. 38, Nº. 1, 2008, págs. 81-109
• Idioma: inglés
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• Resumen

  • The name of the hitherto widely circumscribed species Suaeda corniculata is lectotypified by a specimen from the Altai and the species subdivided into two subspecies, with the new subsp. mongolica being tetraploid and restricted to SE Siberia and C Asia. Based on morphological, caryological and molecular data, the three new species S. tuvinica, S. kulundensis and S. sibirica are separated from S. corniculata and discussed with regard to their origin. S. tuvinica (2n = 54) is endemic to northern C Asia and southernmost Siberia; S. kulundensis (2n = 72, 90), from SE Europe to W Siberia, has arisen by allopolyploidy from S. corniculata (2n = 36, 54) and S. salsa (2n = 36); S. sibirica (2n = 72), from C to E Siberia and northern C Asia, is an allopoloploid offspring of S. corniculata an probably extinct taxon related to S. heteroptera (2n = 18). Dot maps for the total distribution of the new taxa and a new key for all taxa of the S. corniculata group in Eurasia are provided.