Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 25

Genus ja: トチノキ

Genus en: Buckeye, Horse chestnut

# spp.: 12 (from genus_families table) | 24 (from names table)

Accepted: Accepted

Family: Sapindaceae

Family ja: ムクロジ

Infra familial classification: Subfamily Hippocastanoideae: Tribe Hippocastaneae

Distribution en: SE. Europe to Türkiye, Afghanistan to Japan and Indo-China, SE. Canada to Central & E. U.S.A., Oregon to NW. Mexico

Description en: Genus of about 15 species of deciduous trees and shrubs, mainly from woodland in S.E. Europe, the Himalayas, E. Asia, and North America. They have opposite, palmate leaves, mostly mid- to dark green, some turning deep yellow or red in autumn. Large, upright, conical to cylindrical panicles of 4- or 5-petalled flowers, each 1.5-3cm (1/2-1 1/4in) across, with prominent stamens, are borne usually in late spring and early summer. The spiny or smooth-skinned, rounded to pear-shaped fruits contain 1 or 2 large, usually brown or blackish brown seeds. Most horse chestnuts are suitable only for large gardens, where they are best planted as specimen trees, although A. x mutabilis ’Induta’ and A. parviflora may be grown in a medium-sized garden. All parts may cause mild stomach upset if ingested.

Hardiness en: Most are fully hardy. A. californica and A. indica will be damaged below -15°C (5°F).

Cultivation en:

Propagation en: Sow seed in a seedbed as soon as ripe. A. x carnea comes true from seed. Graft in late winter or bud in summer. Propagate A. parviflora from suckers.

Pests en: Prone to canker, coral spot, leaf blotch, and scale insects.

Description ja:

Comment:

Comment ja: トチノキ，マロニエ(marronnier, 仏)

Type species:

Phylogenetic definition:

Update information: Created: 2007-12-06 12:51; Updated: 2026-03-03 21:57 by hkokubun@mac.com