Yellow Wildflower 1

I have no idea what species it is, just that this flower caught my eye, and I wanted to take a few photos of it before I mowed it down... The sun had already set, so it's lit entirely with flash.

 

Strobist: White Lightning Ultra 1800 with a redneck-DIY 7AB/R reflector, 100' back at 1/6 power.

Done