Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Crataegus L. [49]

genus_ja: サンザシ

genus_en: Hawthorn

# spp.: 224

pub_year: 1753

accepted: Accepted (conserved name)

Family: Rosaceae

family_ja: バラ

Infra familial classification: Subfamily Amygdaloideae: Tribe Maleae: Subtribe Malinae

distribution_en: Temp. Northern Hemisphere to Central America

description_en: Genus of 200 or more species of usually spiny, deciduous, sometimes semi-evergreen trees and shrubs occurring in woodland and scrub in N. temperate regions. The leaves are alternate, simple or lobed, mostly ovate or obovate, and mid- to dark green; some species produce good autumn colour. The white to deep pink flowers are usually shallowly cup-shaped and mostly borne in flat or rounded corymbs at the ends of short, leafy shoots although, rarely, they may be solitary. Fruits, produced in autumn, consist of fleshy exteriors with bony nutlets; they are mostly red but may also be black, yellow, or bluish green. Hawthorns are valued for their long season of interest and their extreme hardiness. They are particularly useful specimen trees for a town, coastal, or exposed garden. C. laevigata and C. monogyna are also used for hedging. The seeds may cause mild stomach upset if ingested.

hardiness_en: Fully hardy.

cultivation_en:

propagation_en: Remove seed from flesh as soon as ripe and sow in a seedbed or in containers in an open frame. Stratify and sow seed in a seedbed in spring (germination may take 18 months). Bud cultivars in midsummer, or graft in winter.

pests_en: Caterpillars, aphids, gall midges, fireblight, honey fungus, rust, and powdery mildew may be troublesome.

description_ja:

comment: N.temperate

comment_ja: サンザシ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2024-01-18 11:08 by hkokubun@mac.com

family: