What does the small square frame decorated with ‘pointed’ chevrons along the outer edges enclosing mother goddess Palaghat in the Warli painting symbolize?

God of Plants

Answer:  God of Plants (Hariyali Deva)
The small square frame enclosing mother goddess Palaghat is decorated with 'pointed' chevrons along the outer edges that symbolize Hariyali Deva, i.e., the God of Plants.

Closely associated with the rituals of marriage, fertility, harvest and new season of sowing, Chowk is dominated by the figure of mother goddess, Palaghat, who is chiefly worshipped as the goddess of fertility and represents the corn goddess, Kansari. She is enclosed in a small square frame decorated with ‘pointed’ chevrons along the outer edges that symbolise Hariyali Deva, i.e., the God of Plants. Her escort and guardian is visualised as a headless warrior, riding a horse or standing beside her with five shoots of corn springing from his neck, and hence, called Panch Sirya Devata (five-headed god). He also symbolises the guardian of the fields, Khetrapal. The central motif of Palaghat is surrounded by scenes of everyday life, portraying acts of hunting, fishing, farming, dancing, mythological stories of animals, where the tiger is conspicuously visible, scenes of buses plying and the busy urban life of Mumbai as people of Warli see around them.