having a corm or main underground stem in the for... ... middle of paper ... ...l differences on tannia accessions on the length of petiole, leaf blade length and width, and size cormel. According to Lebot (2009), about 1000 accessions of X. sagittifolium, X. violaceum, X. nigrum, X. brasiliense and X. yucca were collected from different part of the world. The majority was collected from Cameroon, Equatorial Guinea, Gabon, Ghana and Togo. Ethiopia with its diverse agro-ecologies and suitable environments