page_title: Taxonomy of Allium
section_title: Section Arctoprasum
hierarchical_section_title: Taxonomy of Allium / Subdivision / Evolutionary lines and subgenera / First evolutionary line / Subgenus Amerallium / Section Arctoprasum
caption_attribution_description: Wild garlic (Allium ursinum) growing in spring, in woodland at Combe Dingle, Bristol, England.
context_page_description: The precise taxonomy of the genus Allium is still poorly understood with incorrect descriptions being widespread. With over 850 species distributed over the Northern hemisphere Allium is the sole genus in the Allieae, one of four tribes of subfamily Allioideae. New species continue to be described and Allium is both highly variable and one of the largest monocotyledonous genera, but the precise taxonomy of Allium is poorly understood, with incorrect descriptions being widespread. The difficulties arise from the fact that the genus displays considerable polymorphism and has adapted to a wide variety of habitats. Furthermore, traditional classications had been based on homoplasious characteristics. However, the genus has been shown to be monophyletic, containing three major clades, although some proposed subgenera are not. Some progress is being made using molecular phylogenetic methods, and the internal transcribed spacer region, including the 5.8S rDNA and the two spacers ITS1 and ITS2, is one of the more commonly used markers in the study of the differentiation of the Allium species.
context_section_description: Section Arctoprasum Kirschl.
  Allium ursinum L. ramsons, buckrams, wild garlic, broad-leaved garlic, wood garlic, bear's garlic
caption: Arctoprasum: A. ursinum
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