Alfalfa , Medicago sativa . Alfalfa is a perennial grown from seed, used as pasture crop or harvested from hay. Good for firewood, which is in short supply in developing countries. Macronutrients of carbohydrates, proteins, lipids vs. micronutrients of vitamins, minerals. In contrast, the micronutrients are organic vitamins, inorganic minerals.
Vitamins are coenzymes that help enzymes function, or are involved in compound synthesis.