Mesclun Meanies

INGREDIENTS

• 8 large, thick-skinned oranges
• 3 tablespoons red wine vinegar
• 2 tablespoons maple syrup
• 2 teaspoons grainy mustard
• 1/2 teaspoon fresh lemon juice
• 1/4 teaspoon ground ginger
• Freshly ground black pepper, to taste
• 1/4 teaspoon salt
• 1/4 cup olive oil
• 1 (5 oz.) bag baby mixed greens
• 1/2 cup toasted pumpkin seeds