Chestnut cake may be prepared using chestnut flour. Also rather southern trees like walnut tree, chestnut and hornbeam can be found. As climate warmed further around 3,000 B.C., beech, walnut, hickories, chestnut, and butternut grew. The region is plentiful of pine and chestnut trees forests. Some are also called white chestnut or red chestnut. Other streets are lined with flowering chestnut, horse chestnut and other decorative shade trees. The effect of linkage between roan and chestnut is readily observed. A number of other colors are recognized, including bay, black, chestnut, and grey. Cryphonectria parasitica is a parasitic fungus of chestnut trees. They usually come in tan or chestnut colors. The original 17th-century elms were replaced with alternating chestnut and plane trees. Linen cloth can be whitened with chestnut meal. This is essential for restoring the American chestnut trees into the Northeast. This disease came to be known as chestnut blight. Many communities owe their origin and former richness to the ensuing chestnut woods.