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Article History

Received: 12 September 2022

Accepted: 18 January 2023

First Online: 28 January 2023

Declarations

:

: Sample collection of <i>V. harmandiana</i> was permitted by the private land owner in Trang province, Thailand, Mr. Wanlop Pengphan. The collection of the <i>V. harmandiana</i> covering various plant parts for research and related purposes was done with the permission and supervision of the local authority. The collected samples were identified by the author, Dr. Narong Nuntasaen from Department of National Parks, Wildlife and Plant Conservation, Ministry of Natural Resources and Environment. All samples with the voucher specimen accession code, BKF no. 35203, were deposited at the Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation in Bangkok, Thailand. Experimental research and field studies on plants (either cultivated or wild), including the collection of plant material, must comply with relevant institutional, national, and international guidelines and legislation.

: Not applicable.

: The authors declare that there is no conflict of interest.