Chiba University Matsudo/Kashiwa Campus Plant Database

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Details of Genus: Trapa L.

ID: 2120

Genus ja: ヒシ

Genus en: Water chestnut

# spp.: N/A (from genus_families table) | 0 (from names table)

Accepted: Accepted

Family: Lythraceae

Family ja: ミソハギ

Infra familial classification:

Distribution en:

Description en: Genus of about 30 species of submerged aquatic annuals from still or slow-moving water in C. Europe, E. Asia, and Africa. The creeping, floating stems bear linear submerged leaves and rosettes of ovate or almost triangular to diamond-shaped, toothed, mottled floating leaves, hairy beneath, with spongy, swollen leaf-stalks. Small, solitary, tubular, white or lilac flowers are followed by inflated, spiny fruits. In frost-prone areas, grow in baskets in a cold-greenhouse pool, or float rosettes on the surface of an out-door pool after last frosts. In warmer climates, grow in an outdoor pool.

Hardiness en: Half hardy to frost tender.

Cultivation en:

Propagation en: Collect seed in autumn. Store frost-free in water or wet moss over winter; sow in spring, at 13-18°C (55-64°F), in wet compost.

Pests en: Trouble free.

Description ja:

The essential 1000 genera certification Genus Trapa (トラパ)

2019 edition

S Level
Family ミソハギ
ヒシ属

2003 edition

S Level
Family ヒシ
草本II・水生植物
ヒシ

Comment: C & SE Europe, Asia, Africa

Comment ja: ヒシ

Type species:

Phylogenetic definition:

Update information: Created: 2007-12-06 12:51; Updated: 2026-03-03 21:58

Family:

System Accepted? Botanical name Japanese name Infra-familial classification # species
APG4 Accepted Lythraceae ミソハギ科 Show
PB2 Trapaceae ヒシ科 Show
PB3 Lythraceae (Trapaceae) ミソハギ (ヒシ)科 Show
APW Lythraceae ミソハギ科 Show