Originally extracted from USDA PLANTS on 25 July 2012. Hybrids excluded.

Source: USDA, NRCS. 2011. The PLANTS Database (http://plants.usda.gov, 24 December 2011). National Plant Data Team, Greensboro, NC 27401-4901 USA. (Link)
kueda Added by kueda on July 25, 2012
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