Nice coincidence with the posting! Here a burning bush in the Dendera Hathor Temple in my today’s posting: [www.maatforum.com]

There, twin bushes are drawn at the Wabet room ceiling and in my interpretation they are plasma discharges. The classic interpretation there is the unique Isched Tree. Notice how that tree is shown without leaves in Dendera and twigs more like fire or plasma than a classic bush / tree.

Isched-Baum / Ished Tree: [de.wikipedia.org]