Axyris (Chenopodiaceae s.str. or Amaranthaceae s.l.) in the Himalayas and Tibet

• Autores: Alexander P. Sukhorukov
• Localización: Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem, ISSN 0511-9618, ISSN-e 1868-6397, Vol. 41, Nº. 1, 2011, págs. 75-82
• Idioma: inglés
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• Resumen

  • The genus Axyris in the Himalayas and Tibet is revised and only two taxa are recognised: Axyris prostrata possesses an extensive distribution range throughout the Himalayas and Tibet; A. mira (= A. hybrida auct.), with a wider distribution in the Himalayan-Tibetan region, is described as a species new to science. The differences between A. mira and A. hybrida are given; both are geographically vicarious, with A. hybrida actually being distributed in Central Asia. A carpological analysis revealed the facultative presence of sclereids in the pericarp of the brown fruit of A. mira, a feature recognised as a peculiarity of the genus. No correctly identified specimens of A. amaranthoides were traced from the Himalayas or Tibet. General conclusions for the fruit anatomy of Axyris are discussed and a key to all accepted species of Axyris is presented.