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Abstract <p>An overview of published and herbarium data on <i>Populus longifolia.</i> Fisch. drawing on our own floristic, morphological, and molecular data is presented. It is shown that <i>P. longifolia</i> originated in one of the botanical gardens in the northern half of the Russian Plain as a result of hybridization between the American <i>P. balsamifera</i> and the East Asian <i>P. suaveolens</i>, the contribution of <i>P. balsamifera</i> to the hybridization being significantly higher (probably a reversion hybrid). This has been proven by molecular genetic and morphological studies (including the discovery and study of capsules, which turned out to be bare and 2- to 3-valved). In interaction with humans, <i>P. longifolia</i> has spread widely across the northern part of the Russian Plain, which is associated not only with its cultivation, but also with its ability to occupy independently disturbed habitats near rural settlements, roads, and rivers. The absence of local species of poplars of the subgenus <i>Tacamahaca</i> within the relevant range and some of the initial morphological features of the hybrid (especially abundant root suckers, leaves hanging on relatively long petioles, etc.) were probably important for the successful spread of this hybridogenic species. The suggested union of <i>P. longifolia</i> with <i>P. trichocarpa</i> is false and its union with <i>P. tristis</i> is premature, since we know too little about this taxon.</p>

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Populus longifolia Fisch. (Salicaceae)—The Only Invasive Species of Poplar on the Russian Plain

  • 期刊论文

  • 发表日期：

    2026年3月11日

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  • Yu. A. Nasimovich,
  • M. V. Kostina,
  • R. A. Murataev,
  • E. V. Garin,
  • E. V. Borkhert,
  • E. N. Pushkova,
  • N. V. Melnikova

摘要

Abstract

An overview of published and herbarium data on Populus longifolia. Fisch. drawing on our own floristic, morphological, and molecular data is presented. It is shown that P. longifolia originated in one of the botanical gardens in the northern half of the Russian Plain as a result of hybridization between the American P. balsamifera and the East Asian P. suaveolens, the contribution of P. balsamifera to the hybridization being significantly higher (probably a reversion hybrid). This has been proven by molecular genetic and morphological studies (including the discovery and study of capsules, which turned out to be bare and 2- to 3-valved). In interaction with humans, P. longifolia has spread widely across the northern part of the Russian Plain, which is associated not only with its cultivation, but also with its ability to occupy independently disturbed habitats near rural settlements, roads, and rivers. The absence of local species of poplars of the subgenus Tacamahaca within the relevant range and some of the initial morphological features of the hybrid (especially abundant root suckers, leaves hanging on relatively long petioles, etc.) were probably important for the successful spread of this hybridogenic species. The suggested union of P. longifolia with P. trichocarpa is false and its union with P. tristis is premature, since we know too little about this taxon.