Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 1960

Genus ja: ジオウ

Genus en:

# spp.: 7 (from genus_families table) | 3 (from names table)

Accepted: Accepted

Family: Orobanchaceae

Family ja: ハマウツボ

Infra familial classification: Tribe Rehmannieae

Distribution en: China, Japan

Description en: Genus of 8 or 9 species of perennials, sometimes grown as biennials, from woodland and stony sites in China. They are cultivated for their large, foxglove-like flowers, which are 2-lipped and borne in terminal racemes. The leaves, arranged in basal rosettes, are large, obovate to oblong, shallowly lobed or toothed, conspicuously veined, and hairy. Grow at the front of a sunny border; in regions with mild, damp winters grow permanently, or over-winter, in a cool greenhouse.

Hardiness en: Fully hardy to frost hardy.

Cultivation en:

Propagation en: Sow seed at 13-16°C (55-61°F) in late winter; seedlings will flower in 12-14 months. Take root cuttings in late autumn, or softwood cuttings from basal shoots before flowering. Separate and pot up runners in spring.

Pests en: Susceptible to slug and snail damage.

Description ja:

Comment:

Comment ja: 最近の分析ではハマウツボ科の最基部に位置するが、今後、別の科の姉妹群となる可能性もあるので、 YlistのようにRehmanniaceae ジオウ科としておくのが妥当かもしれない。かつてはイワタバコ科やゴマノハグサ科に分類されることもあった。

Type species:

Phylogenetic definition:

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