View photos of the edible and medicinal plant Anoda cristata (Crested anoda), profiled in Wild Edible Plants of Arizona.

A passage from Wild Edible Plants of Arizona:

As a spinach–like cooked green, simmer the leaves for 10–15 minutes and serve with butter and seasonings. Like other plants in the Mallow family, once cooked a subtle sliminess may be noticed. This can be eliminated by a quick water rinse prior to serving.