This member of the Cycadaceae family was given this name by David John de Laubenfels in 1998. It is found in Cambodia, Laos, Myanmar, Thailand and Vietnam, growing in a well drained soil like sand and limestone gravel with some water and lots of sun. The caudex can grow to 40 centimetres in diameter, the entire plant to 150 centimetres in height. The male cones are red to brown, while the female are brown and green.
The genera name is made from the prefix epi- from Greek, where it means 'upon, on, over, near, at, before, or after', and Cycas from Greek kyklos: 'circle' referring to the rounded tubers.
The species name from it first discovery in Siam; present day Thailand The caudex from Picclick.it. The female cone from Nparks.gov.sg. The male cone by Nparks.gov.sg.
