Trumpet vine flowers. Pretty, but in my experience it hardly ever attracts a hummingbird as it is often said to do. I've seen about two hummingbirds at it in the 30 years I've been growing the stuff. It is also very invasive, spreading by underground roots, much more than by its copious seed. It is also hard to get rid of.
RMC Tokina f/5.6 100-300mm, wide open
K10D, in-camera jpeg (Natural, with Sat, Contr & Sharp zeroed)
The lens has extremely shallow DOF wide open and near its maximum reproduction ratio. Here, I focused on the backlit veining in the lower flower, and, regarding whatever else might be sharp, I let the chips fall where the may.