Fluted Black Elfin Saddle (Helvella lacunosa)

Usually I avoid attempting to identify mushroms, partly because it is difficult, but also because it often involves taking specimens and I prefer to leave mushrooms, like wild flowers, where I meet them instead of uprooting them just to satisfy my curiosity. However, this mushroom is distinctive enough in appearance alone that I will venture an opinion on its identification as a Fluted Black Elfin Saddle (Helvella lacunosa). It has a rather morbid color and shape and this has set me to wondering why mushrooms differ so much in appearance. Wildflowers are generally agreed to have evolved their shapes and colors to attract pollination agents such as bees. However, I've yet to hear a rationale for any of the variations in shape and color of mushrooms.