Figure 1.

Examples of black dahlia cultivars. A: cv. Karma Choc, B: cv. Tisa, C: cv. Arabian Night, D: cv. Kenora Macop B. Photos of other cultivars can be found e.g. in the dahlia catalog at http://www.dahlie.net/ webcite or http://www.dahlienwirth.at/dahliensorten.html webcite.

Thill et al. BMC Plant Biology 2012 12:225   doi:10.1186/1471-2229-12-225
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