Quercus macrocalyx explained

Quercus macrocalyx is a tree species in the beech family Fagaceae There are no known subspecies. It is placed in subgenus Cerris, section Cyclobalanopsis.^[1]

This oak tree grows up to 20 m tall and has been recorded from Vietnam, where it may be called sồi đấu to.^[2]

References

1. Web site: Denk . Thomas . Grimm . Guido W. . Manos . Paul S. . Deng . Min . Hipp . Andrew L. . 2017 . Appendix 2.1: An updated infrageneric classification of the oaks . figshare . 2023-02-24 . xls . amp .
2. Phạm Hoàng Hộ (2003) Cây Cỏ Việt Nam: an Illustrated Flora of Vietnam vol. II publ. Nhà Xuẩt Bản Trẻ, HCMC, VN

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