This started as a full-colour digital image to which I applied three B&W split-toning layers (with masks on different parts of the image). Split-toning is possible in the traditional darkroom, but the range of tones that can be reliably generated is much smaller, and the process is a lot less predictable.
Anyway, this flower is called a “Bird of Paradise”, and I found it in full bloom along a main street in downtown Naples, Florida.