Korean Harrington Plum Yew (Cephalotaxus harringtonia subsp. koreana)
Cephalotaxus harringtonia subsp. koreana: Korean Plum Yew Overview
Inhabiting the temperate woodlands of the Korean Peninsula and surrounding East Asian regions, Cephalotaxus harringtonia subsp. koreana thrives as a shade-tolerant coniferous understory shrub. This slow-growing evergreen is recognized for its compact growth habit.
It typically forms dense patches in the lower strata of mixed and deciduous forests. The plant remains relatively rare in cultivation compared to the species type.
Taxonomy
- β ΡΠ°ΡΡΡΠ²ΠΎ Plantae
- β division Tracheophytes
- β subdivision Spermatophytes (Seed plants)
- β superclass Gymnospermae
- β division Pinophyta
- β subclass Cupressidae
- β order Cupressales (Cypresses and junipers)
- β family Cephalotaxaceae (Plum-yews family)
- β genus Cephalotaxus (Plum yew)
- β species Cephalotaxus harringtonia (Japanese Plum Yew)
- β subspecies Cephalotaxus harringtonia subsp. koreana (Korean Harrington Plum Yew)
Morphology
The needles of Cephalotaxus harringtonia subsp. koreana are linear and flat, measuring about 2 to 4 centimeters in length. They are arranged in two flat rows along the twigs, showcasing a prominent midrib on the upper surface and two pale stomatal lines underneath. The shrub maintains a spreading branching pattern with dense, dark green foliage.
Its reproductive structures are typical of the genus, featuring globose male cones that release pollen in early spring. The female cones are solitary or paired, developing into fleshy, olive-like seed cones that turn reddish-purple when fully ripe.
Applications
In traditional medicine, parts of Cephalotaxus harringtonia subsp. koreana have been utilized for their therapeutic properties. The seeds have historically been used to treat parasitic infections and digestive issues. Modern research focuses on the cytotoxic alkaloids found within the foliage and seeds.
Additionally, because of its cold hardiness and attractive evergreen needles, this subspecies is occasionally used in regional landscaping as a shade-tolerant ornamental shrub. It is suitable for woodland gardens and foundation plantings in temperate zones.
Interesting facts
The subspecies name koreana highlights its primary geographic origin on the Korean Peninsula. In its native habitats, it often grows on shady mountain slopes alongside broadleaf trees.
Its seeds are rich in oils, which were once extracted and used as lamp fuel in traditional Korean households. The plant has evolved chemical defenses against herbivores, making it resistant to deer damage.
Geography of distribution
- South Korea
- North Korea
Sources
- Plants of the World Online (POWO)
- World Flora Online (WFO)
- Global Biodiversity Information Facility (GBIF)