In a large wide pot or deep skillet over medium flame, heat the olive oil and add the chopped scallions and, if using, the chopped fennel bulb. Cook, stirring, until soft, about 8 minutes. Add the chile pepper and stir all together.
Add the greens, first the spinach, stirring until it wilts, then the wild fennel or dill, parsley and mint or chervil. Cook until all the greens are wilted. Pour in the ouzo, if using, raise the heat a little so that the alcohol can burn off.
Dilute the tarama in the water and stir it into the greens. Reduce heat to low and simmer, partially covered, until the mixture is thick and creamy.
Preheat the broiler. Brush the bread with a little olive on both sides and grill, turning, until golden. Remove.
Place a few heaping tablespoons of the greens mixture on the bread and serve.