Chiba University Matsudo/Kashiwa Campus Plant Database

Details of genus: Trapa L. [2120]

genus_ja: ヒシ

genus_en: Water chestnut

# spp.:

pub_year:

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:

comment: C & SE Europe, Asia, Africa

comment_ja: ヒシ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2020-09-04 03:56

family: