Chiba University Matsudo/Kashiwa Campus Plant Database

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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:

The essential 1000 genera certification Genus Torreya (トレヤ)

2019 edition

A Level
Family イチイ
カヤ属
イヌガヤは Cephalotaxus

2003 edition

B Level
Family イチイ
木本II・裸子植物
カヤ

1986 edition

B Level
Family イチイ
針葉樹
カヤ

comment:

comment_ja: カヤ

type_species:

Phylogenetic definition:

Update Information: Created: 2007-12-06 12:51; Updated: 2022-03-09 15:20

family:

SystemAccepted?Scientific nameJapanese nameInfra-familial classification# species
APG4 Taxaceae イチイ科 Show
PB2 Taxaceae イチイ科 Show
PB3 Taxaceae イチイ科 Show

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