Shakti Ganapathi is the 5th form among 32 forms of Lord Ganesha. He is depicted with 4 arms (Chaturbhuja Ganapathi). Shakti Ganapati is not mentioned in 21 types of Ganesha (Ekavimsathi Ganapathi) & in 16 types of Ganesha (Shodasha Ganapati).
Shakti Ganapathi is the most powerful form among all forms of Ganesha. This form of Ganapati is part of Tantric worship.
Shakti Ganapathi Dhyanam: Shakthi Ganesha Mantram
Alingya deveem haritham nishnnaam
Parasparaa shlishtaka thee nivesham
Sandhya runam pashasrunim vahastham
Bhayapaham shakti ganesha meede
Appearance & Iconography of Shakti Ganapathi
Holding the green-coloured Shakti, Shakti Ganapati is depicted as being the colour of the sky at sunset. He appears with a noose in one hand, a garland of flowers in another and one hand in the abhaya mudra, offering blessing to his devotees.
Shakti Ganapati is worshipped in Tantric form of worship.
Shakti Ganapathi Dhyana Mantra