black stone flower or kalpasi, parmotrema perlatum. it is used as spice in india.

aroma asian background biryani black brown close closeup color condiment cook cooking cuisine dagad dark dried dry flower food fresh group heap herb herbal incredient india indian ingredient kalpaasi kalpasi lichen macro organic parmotrema perlatum perlatumseed phool pile plant seasoning smell spice spicy stone taste tasty texture traditional tree used view white