Details of genus: Torreya Arn. [408]
genus_ja:
genus_en: Nutmeg yew
# spp.:
pub_year:
accepted: Accepted
Family: Taxaceae
family_ja: イチイ
Infra familial classification:
distribution_en: E.Asia, N.America
description_en: Genus of 7 species of dioecious, evergreen, coniferous shrubs or trees found in woodland in Asia and North America. The flattened, lance-shaped, 2-ranked leaves are Yew-like, but hard and spine-tipped. The common name refers to the single-seeded, ovoid or ovoid-ellipsoid female, cone-like structures ("cones"); they may take 2 years to ripen, maturing to olive- or plum-like fruits. The male "cones" are white and spherical. Nutmeg yews are vigorous, small to medium-sized specimen trees. T. californica thrives in areas with cool, damp summers, whereas other species grow best in areas with summers that are warm and humid.
hardiness_en: Fully hardy.
cultivation_en:
propagation_en: Sow seed in containers in a cold frame or in a seed bed, as soon as ripe; the seed may take 2 or more years to germinate. Insert semi-ripe cuttings in late summer; use cuttings from strongly upright growth to form leading shoots.
pests_en: Trouble free.
description_ja:
comment:
comment_ja: カヤ
type_species:
Phylogenetic definition:
Update Information: Created: 2007-12-06 12:51; Updated: 2022-03-09 15:20
family:
System | Accepted? | Scientific name | Japanese name | Infra-familial classification | # species | |
APG4 | Taxaceae | イチイ科 | Show | |||
PB2 | Taxaceae | イチイ科 | Show | |||
PB3 | Taxaceae | イチイ科 | Show |