Quercus macrocalyx

Hickel & A. Camus

Soi tru

FagaceaeSeeds/NutsPotential hazards — see below

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What to Eat

Edible parts: Nuts

The starch in the nuts is edible and the nuts are also used to distill alcohol.

Known Hazards

Where to Find It

A tropical plant. It grows in tropical evergreen forests at 500-1,000 m altitude. It occurs on slopes and mountain tops.

Asia, China, Indochina, Laos, SE Asia, Vietnam,

Countries: United Arab Emirates, Afghanistan, Armenia, Azerbaijan, Bangladesh, Bahrain, Brunei, Bhutan, China, Georgia, Indonesia, Israel, India, Iraq, Iran, Jordan, Japan, Kyrgyzstan, Cambodia, North Korea, South Korea, Kuwait, Kazakhstan, Laos, Lebanon, Sri Lanka, Myanmar, Mongolia, Maldives, Malaysia, Nepal, Oman, Philippines, Pakistan, Qatar, Saudi Arabia, Singapore, Syria, Thailand, Tajikistan, Timor-Leste, Turkmenistan, Turkey, Taiwan, Uzbekistan, Vietnam, Yemen

How to Identify

An evergreen tree. It grows 20-25 m tall. The trunk is 60-80 cm across. The bark is smooth and grey. The leaves are large and long. The nut is oval and 5-5.5 cm long by 2.5 cm wide.

How to Grow

Plants are grown from seeds.

Wikipedia

Source ↗

Quercus macrocalyx is a tree species in the beech family Fagaceae There are no known subspecies. It is placed in subgenus Cerris, section Cyclobalanopsis. This oak tree grows up to 20 m tall and has been recorded from Vietnam, where it may be called sồi đấu to.

Production

It grows slowly.

Other Information

Nuts are sold in local markets.

Notes

There are about 600 Quercus species.

Names & Synonyms

Ko ko, Ko pook

Cyclobalanopsis austroyunnanensis HuCyclobalanopsis fleuryi (Hickel & A. Camus) W. T. ChunCyclobalanopsis macrocalyx (Hickel & A. Camus) M. Deng & Z. K. ZhouCyclobalanopsis nengpulaensis H. Li & Y. C. HsuQuercus fleuryi Hickel & A. CamusQuercus megalocarpa A. CamusQuercus tsoi Chun ex Menitsky

References (3)

Forest Inventory and Planning Institute, 1996, Vietnam Forest Trees. Agriculture Publishing House p 299 (As Quercus fleuryi)
Lehmann, L., et al, Forests and Trees of the Central Highlands of Xieng Khouang, Lao P. D. R., A field guide. (As Quercus fleuryi)
www.mekonginfo.org/assets/midocs/0001714-environment-forests-and-trees-of-the-central-highlands-of-xieng-khouang-lao (As Quercus fleuryi)