Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 1821

Genus ja:

Genus en:

# spp.: 18 (from genus_families table) | 1 (from names table)

Accepted: Accepted

Family: Dioscoreaceae

Family ja: ヤマノイモ

Infra familial classification:

Distribution en:

Description en: Genus of 10 species of stemless perennials, with solid tubers or upright, scarred rhizomes, from semi-evergreen, monsoon forest in West Africa and S.E. Asia, grown for their handsome foliage and unusual flowers. Lance-shaped to elliptic or obovate, entire or palmately or pinnately lobed leaves, often with purplish green leaf-stalks, are widely spaced or crowded on the rootstock. Nodding, bell-shaped flowers are borne in umbels, each umbel surrounded by 4 leaf-like floral bracts. Each flower also has a distinctive, narrow, thread-like appendage, to 25cm (10in) long. In frost-prone areas, grow in a warm greenhouse; in humid tropical climates, grow in a shady border.

Hardiness en: Frost tender.

Cultivation en:

Propagation en: Surface-sow seed at 22-27°C (72-81°F) in spring. Divide, or take transverse sections of rhizomes with at least one bud, in spring. Dust cut surfaces with fungicide.

Pests en: Red spider mites, tarsonemid mites, and grey mould (Botrytis) may be a problem.

Description ja:

Comment:

Comment ja: タッカ

Type species:

Phylogenetic definition:

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