Pharmacognostic Characterization and Comparative TLC Fingerprinting of Siphonodon celastrineus Griff. and Suregada multiflora (A. Juss) Baill. Heartwoods: Toward Ethnomedicinal Validation and Herbal Standardization, Caichompoo, Wanida, Laothamyingyong Kanin, Kaewsuwan Napassorn, Pulbutr Pawitra, Wichai Nuttapong, Saentaweesuk Waraporn, and Dhammaraj Taweesak , Pharmacognosy Journal, April 2026, Volume 18, Issue 1, p.63-73, (2026)