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THE TRIBES

The following 35 monophyletic tribes are delimited following extensive molecular surveys and critical evaluation of morphology. In all, they deal with 209 genera (62% of the total) that include 3,312 species (89.3%) of the family. Additional 55 genera representing 155 species have recently been studied by Warwick et al. (in preparation) and about ten additional tribes will be recognized. The seven largest genera of the family (Alyssum, Boechera, Cardamine, Draba, Erysimum, Lepidium, Physaria), totaling 1414 spp. (or 38% of the family), are monophyletic are fairly well-surveyed molecularly. By contrast, about 50 monospecific and oligospecific genera remain to be studied. Also, the delimitation of many genera in the tribes Brassiceae and Thelypodieae need further studies, and it is appears that several of them will be merged with the larger ones. Finally, five genera (e.g., Crucihimalaya Al-Shehbaz, O’Kane & R. A. Price, Olimarabidopsis Al-Shehbaz, O’Kane & R. A. Price, Pachycladon J. D. Hooker, Transberingia Al-Shehbaz & O’Kane, and Turritis Linnaeus), previously assigned to Camelineae (Al-Shehbaz et al., 2006), are excluded herein from this tribe and are being assigned to other tribes.


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