Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 254

Genus ja: ハンノキ

Genus en: Alder

# spp.: 41 (from genus_families table) | 28 (from names table)

Accepted: Accepted

Family: Betulaceae

Family ja: カバノキ

Infra familial classification:

Distribution en: Temp. Northern Hemisphere to Himalaya and Andes

Description en: Genus of about 35 species of deciduous trees and shrubs from all parts of the N. hemisphere, usually found on poor or wet soils. Alders have alternate, simple, toothed leaves, and bear male and female flowers in separate catkins on the same tree. The male catkins are conspicuous; the females are smaller, and after pollination develop into persistent, woody, cone-like green fruits, which turn brown in autumn. Some alders, such as A. rubra and selected forms of A. cordata, A. glutinosa, and A. incana, are grown for their ornamental foliage, and are particularly effective planted close to water. Most, however, are notable for their ability to thrive on poor, wet soils, and are widely used in land reclamation. A. cordata, A. incana, and A. rubra are fast-growing and valuable as windbreaks.

Hardiness en: Fully hardy.

Cultivation en:

Propagation en: Sow seed in a seedbed as soon as ripe. Root hardwood cuttings in winter. Bud in late summer.

Pests en: Prone to Phytophthora root rot.

Description ja:

Comment: N. temperate

Comment ja: ハンノキ，ヤシャブシ

Type species: Alnus glutinosa (L.) Gaertner (1790) Accepted

Phylogenetic definition:

Update information: Created: 2007-12-06 12:51; Updated: 2026-03-03 21:58 by hkokubun@mac.com