while the exact features of kenyon cells can vary between species, there are enough similarities to define their general structure. kenyon cells have dendritic branches that arborize in the calyx or calyces, cup-shaped regions of the mushroom body. at the base of the calyces, kenyon cell axons come together and form a bundle known as the pedunculus. at the end of the pedunculus, kenyon cell axons bifurcate and extend branches into the vertical and medial lobes.