Himalayan yew


Scientific Name

Taxus wallichiana Zucc.


Other Names

Louth salla (Nepali)


Life Form

Tree


Synonyms

Taxus baccata subsp. Wallichiana (Zucc.) Pilg.


Family

Taxaceae



Louth salla (Nepali)
Image by - Saroj Kasaju
Usages

Medicine - The alkaloid compounds (taxanes) of the bark are a source for the anti-cancer drug paclitaxel (Taxol) which has become a major reason for exploitation in recent years. The leaves yield similar chemicals in low concentrations.


Native to

Bhutan, China, India, Myanmar, Nepal


Habitat

It grows as an understorey or lower canopy tree in montane, temperate, warm temperate, and tropical submontane to high montane coniferous, broad-leaved and mixed forest at altitudes of 900-3700 m asl.


Conservation Status

Endangered


More Info

Its slow growth and dense form make it ideal for hedges and formal gardens. Most parts of the plant are toxic if ingested.


Plant Description

It is an evergreen, dioecious coniferous tree that grows up to 10-20 meters tall.

Stem is erect and woody, with reddish-brown bark that peels off in thin strips. The crown is conical when young, becoming broader with age.

Leaves are linear, 2‑4 cm long, flat, and dark green. They are arranged spirally on the stem but appear two-ranked due to twisting. Leaves have a sharp, pointed tip and a midrib.

Male cones are small, round, and yellow, occurring at the ends of branches. Female cones are inconspicuous, with a single ovule surrounded by a fleshy cup-like structure.

Mature cone is a fleshy, red, berry-like structure called an aril. It partially encloses a single, hard, brown seed.


Phenology

Male cone: March Female cone: March Mature cone: Autumn