Plum-yew family
Cephalotaxaceae

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Plum-yew family

Cephalotaxaceae

イヌガヤ科

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A small family of evergreen conifers distributed in East Asia. In Japan, Cephalotaxus harringtonii grows naturally in moist montane forests. Seeds are enclosed in a drupe-like aril, resembling Taxaceae but phylogenetically independent.

Key Characteristics

  • Leaves linear to lanceolate, arranged in two ranks, with two white stomatal bands on the undersurface
  • Seeds enclosed in a fleshy aril, drupe-like
  • Dioecious

Morphological Traits

A family may include species with different trait values — multiple values indicate the range within the family.

Leaf arrangement

Opposite

Leaf type

Simple

Venation

Parallel

Leaf margin

Entire

Leaf shape

Needle

Growth form

Tree / Shrub

Evergreen/Deciduous

Evergreen

Stipules

Absent

Petal fusion

No petals

Ovary position

Superior

Plant sex

Dioecious

Phylogenetic Position

Gymnosperms > Conifers > Pinales > Cephalotaxaceae

Divergence Era

Mesozoic Cretaceous (approx. 100 million years ago onward)

Representative Genera

イヌガヤ属(Cephalotaxus)

Related Evolution Events

  • Convergent evolution toward animal dispersal via fleshy arils (independently from Taxaceae)
  • Range contraction to East Asia
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Plants in Plum-yew family on this site

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