Wild Salvia Flower Close-up (macro) - San Francisco - The actual flower diameter is about 1/2" (1.3 cm). The small hair on the flower are called trichomes.
For more information about Salvia plants, read en.wikipedia.org/wiki/Salvia.
If you can identify the exact genus of this Salvia, please post a comment or please email me!
I used the "reverse lens" / "inverted lens" technique to shoot this macro using a regular lens.