Dioon edule Lindl.
Chestnut Dioon
Evergreen cycad with an open  a terminal rosette , Palm like plants, dioecious, trunk up to 2 -3 m  tall, 15-20 cm in diameter, very stocky leaves pinnate 90-140 cm long, stiff, straight, gray-green female cone solitary, ovoid 25-29- cm long, densely tomentose male cone solitary, cylindrical 17-20 cm long, 6-75 cm in diameter, densely white or brownish gray tomentose
slow ornamental cycads.  Species in this genus form structures known as coralloid roots. These roots branch off from the taproot or secondary roots and are distinctive in that they grow laterally or upward, forming a nodular mass at the apex. These coralloid roots occur slightly below or slightly above the soil surface and generally contain cyanobacteria, also known as blue-green algae. These are able to fix atmospheric nitrogen and make it available as a nutrient to the plant. 
Dioon aculeatum Lem, Dioon imbricatum Miq, Macrozamia pectinata Liebm ex Dyer
.The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and Mazhar Botanic Garden does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes.