Stichomancy :: Stichidium (n.) A special podlike or fusiform branch containing tetraspores. It is found in certain red algae.
Tephramancy :: Tephramancy (n.) Divination by the ashes of the altar on which a victim had been consumed in sacrifice.
Theomancy :: Theomancy (n.) A kind of divination drawn from the responses of oracles among heathen nations.