Leaves, broader than the last, pointed, somewhat heart - shape at base, their serrulate margins regularly incised, hairy on the veins beneath, petioles and twigs not glandular and bristly. The involucral bracts surrounding the nuts unite at the summit and are prolonged into a bristly, tubular beak, torn at apex, much longer than the fruit.
Common, like the preceding, throughout all the Atlantic States and in the mountains to Georgia. The filbert is a European species (C. avellana), whose nuts, ripening in October, grace our Thanksgiving table. One species becomes a tree 50 feet in height (C. colurna).