Central Park contains ten "great tree" clusters that are specially recognized by NYC Parks. These include four individual American Elms and one American Elm grove; the 600 pine trees in the Arthur Ross Pinetum; a Black Tupelo in the Ramble; 35 Yoshino Cherries on the east side of the Onassis Reservoir; one of the park's oldest London Plane trees at 96th Street; and an Evodia at Heckscher Playground.[82][86] The American Elms in Central Park are the largest remaining stands in the northeastern U.S., protected by their isolation from the Dutch elm disease that devastated the tree throughout its native range.[2] There are several "tree walks" that run through Central Park.[3]