Combine dressing ingredients, mixing well. Set aside. Cut each grapefruit section into halves or thirds, and place in salad bowl. Cut avocado into small pieces, and add to grapefruit. Tear watercress and lettuce into bite-sized pieces, and add to salad bowl. Add optional sunflower seeds. Toss with dressing and serve. Yield: 6 Prep Time: 30 minutes. Typed in MMformat by cjhartlin@msn. Com