Corylus colurna, Turkish hazel. Origin: Southeast Europe, West Asia. Colurna means horned / spiny, and refers to the clusters of the flowers which are covered by spiny involucre husks. Tree with a height of 15-20 m. Regular, wide egg-round to wide pyramidal crown with straight trunk. Greyish-brown, coarse trunk, covered with corky fissures that peel off in small plates. Two-year-old twigs already develop a soft, corky bark. Large and wide leaf with soft hairs. Flowers in February-March with thick yellowish-brown, long catkins. The nuts are enveloped in a thick, fleshy and later more woody glandular husk with long serrated hairs. For parks, but also for squares, avenues and wide streets. Endures paved surfaces. Strong, wind resistant tree.