Broccoli
Broccoli, a cruciferous vegetable, contains 89 mg of vitamin C, and broccoli actually contains some protein needed for muscle growth, as well as a wide range of processes that occur in the body. 1 cup provides regarding 3 grams of protein which is low, but surprising for for green vegetables.
One of the most important nutrients in broccoli is vitamin K, which helps with blood clotting in addition to supporting bone health.