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Japanese torreya

Scientific Name: Torreya nucifera

Family: Taxaceae

Category: Gymnosperm

Growth:

Duration:

Other Names:

       

Japanese Torreya (Torreya nucifera)

The Japanese Torreya, scientifically known as Torreya nucifera, is an evergreen tree appreciated for its ornamental value and timber. It is also commonly known as Kaya, Japanese Nutmeg-yew, or Nut-bearing Torreya.

Considerations for Pets

  • The seeds of Torreya nucifera are mentioned as being edible, which may be a consideration for pets that tend to ingest plant material.

Considerations for Children

  • The seeds of Torreya nucifera are mentioned as being edible, which may be a consideration for children that tend to ingest plant material.

Taxonomy and Nomenclature

  • Scientific Name: Torreya nucifera (L.) Siebold & Zucc.
  • Family: Taxaceae (Yew family), sometimes Cephalotaxaceae (Plum-Yew) is also mentioned
  • Common Names: Kaya, Japanese Nutmeg Tree, Japanese Nutmeg-yew, Japanese Torreya, Nut-bearing Torreya.
  • Symbol: TONU3
  • Taxonomic Rank: There is a mention of Torreya fargesii Franch. var. yunnanensis (W. C. Cheng &amp L. K. Fu) N. Kang, indicating a variety within the Torreya genus.

Distribution and Habitat

  • Native to southern Japan and South Korea's Jeju Island.
  • A woodland species found scattered in most types of mixed broad-leaved-conifer forests in the southern half of Japan.
  • Hardy to zone (UK) 7 and USDA Zone 5 (-10 to -20 F).

Morphological Characteristics and Growth Habits

  • Evergreen tree growing up to 20 meters (65 feet) tall and 10 meters (32 feet) wide.
  • Slow growth rate.
  • Attractive dark green foliage that emerges light green in spring.
  • Glossy needles.
  • Branches droop but resist breakage.

Uses

  • Ornamental tree
  • Timber tree
  • The seed is edible.

Interactions with Other Organisms

  • Natural dispersal of the seeds is thought to be aided by squirrels, which bury the seeds.

Quirky Facts

  • One article mentions 120 men wearing red loincloths passing through a ring made of Japanese torreya after purifying their souls by bathing in spring water.
  • The 'Snowcap' variety blooms with white shoots at the tips of the branches in August, creating a striking contrast with the dark green older growth.

Further Information

  • Encyclopedia of Life
  • Discover Life
  • Dave's Garden
  • USDA Plants Database