Glycogen Plastids in M�llerian Body Cells of Cecropia peltata—A Higher Green Plant

A glycogen-containing plastid has been found in the cells of M�llerian bodies on Cecropia peltata (Moraceae) trees. Plastids in cells of the leaf blade, petiole, and stem are of the usual chloroplast type and contain starch grains only. M�llerian bodies exist for the purpose of providing a food supply for a protective, mutualistically inhabiting ant population. A series of chemical tests and observations indicates that this glycogen is identical to animal glycogen.

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