Malus sylvestris Malus sylvestris Malus sylvestris, the European crab apple, is a species of the genus "Malus", native to Europe. Its scientific name means "forest apple" and the truly wild tree has thorns. Wild apple has an expanded crown and often appear more like a bush than a tree. It can live 80–100 years and grow up to 10 m tall with trunk diameters of 23–45 cm. Due to its weak competitiveness and high light requirement, wild apple exist mostly at the wet edge of forests, in farmland hedges or on very extreme, marginal sites. The tree is rather rare but native
Karl Malus the Mexican border. The experiments he performed on them turned them into animal hybrids. When Captain America tracked his operations down, Karl Malus used his symbiotic abilities to subdue Captain America and experiment on him which turned Captain America into a werewolf. Using Redwing's DNA, Karl Malus turned a Mexican teenager named Joaquin Torres into a bird/human hybrid. Upon being liberated by Misty Knight, Captain America followed and subdued Karl Malus by using Redwing's high-pitched sounds on him and remanded him to S.H.I.E.L.D. custody. While Captain America and the others that were experimented upon by Karl Malus were restored to