Dahlia Pinwheel Face

the Dahlia is a genus of bushy, tuberous, perennial plant native to Mexico, Central America, and Colombia. There are at least 36 species, some which grow up to 10 meters tall! Dahlia hybrids, of which there are countless types, are commonly grown as garden plants. The Aztecs gathered and cultivated the dahlia for food, ceremonies, as well as decorative purposes, and the long woody stem of one variety was used for small pipes.

Dahlias are used as food plants by the larvae of some moths and butterflies, and are a favorite nectar source of bees.

The dahlia is named after Swedish 18th-century botanist Anders Dahl.[5] In German the dahlia was known during most of the 19th century as Georgia, being named after the naturalist Johann Gottlieb Georgi of St. Petersburg, Russia. (Info from Wiki)

If you would like to know more about dahlias, please visit this Wiki page: en.wikipedia.org/wiki/Dahlia
This image was taken during my trip to San Francisco during September 12-15, 2011.