The biogeography of Hoffmannseggia (Leguminosae, Caesalpinioideae, Caesalpinieae): a tale of many travels
The biogeography of Hoffmannseggia (Leguminosae, Caesalpinioideae, Caesalpinieae): a tale of many travels
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DOI：
10.1111/j.1365-2699.2004.01161.x
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发表时间：
2004-12
影响因子：
3.9
通讯作者：
B. Simpson;J. Tate;A. Weeks
中科院分区：
文献类型：
--
作者：
B. Simpson;J. Tate;A. Weeks
目的开花植物霍夫曼节属植物由21种植物组成，两栖分布于美国西南部干旱地区和邻近的墨西哥以及南美洲中西部。这种地理分离的模式在许多其他被子植物属中都是相同的，并且一个多世纪以来一直是讨论的主题，不同的作者主张特定分类群的北方起源，而其他作者则主张南方起源。这项研究使用了一个在每个地区都有许多物种的属的系统发展史，以解决起源于北方或南方的问题，以及生物在两个大陆之间移动的便利条件。
Aim The flowering plant genus Hoffmannseggia consists of 21 species distributed amphitropically between the arid regions of the south‐western United States and adjacent Mexico, and west‐central South America. This pattern of geographical disjunction is shared by numerous other angiosperm genera and has been the subject of discussions for more than a century with various authors advocating a northern origin for particular taxa and others advocating a southern origin. This study uses a well‐supported phylogeny of a genus with numerous species in each area to address the issues of a northern or southern origin and the facility with which organisms move between the two continents.