Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Hypericum L. [204]

genus_ja:

genus_en: St. John’s wort

# spp.:

pub_year:

accepted: Accepted

Family: Hypericaceae

family_ja: オトギリソウ

Infra familial classification:

distribution_en: Temp., tropic mountains

description_en: Genus of more than 400 species of deciduous, evergreen, and semi-evergreen shrubs and trees, annuals, and herbaceous perennials, occurring world-wide in a wide range of habitats, from woodland and scrub to mountains and cliffs. They have variably shaped, opposite, or occasionally whorled leaves, some with attractive autumn colour. Showy yellow flowers with prominent stamens are borne singly in terminal, occasionally axillary cymes, usually over a long period. The fruits, ornamental in a few species, are usually 3- to 5-valved capsules, or occasionally berry-like. Depending on size, hypericums are suitable for a variety of situations, from a shrub or mixed border to a rock garden; H. elodes grows well in boggy ground or as a marginal aquatic. Grow tender species in a cool or temperate greenhouse in frost-prone areas, and in a shrub border in warmer regions.

hardiness_en: Fully hardy to frost tender.

cultivation_en:

propagation_en: Sow seed in containers in a cold frame in autumn (species may hybridize). Divide perennials in spring or autumn (H. elodes in spring only). Root softwood cuttings of perennials in late spring; root greenwood or semi-ripe cuttings of shrubs in summer.

pests_en: H. calycinum and H. x inodorum are susceptible to rust.

description_ja:

comment:

comment_ja: オトギリソウ，キンシバイ，ビヨウヤナギ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2022-03-09 15:20

family: