part_of part of part of anther wall anther wall exothecium plant_anatomy PO:0006482 Zea exothecium (narrow) exotecio de la pared de la antera (Spanish, exact) Poaceae exothecium (narrow) PO:0020004 anther epidermis (exact) An microsporangium exothecium (PO:0025311) that is part of an anther wall (PO:0000002). anther sac epidermis (exact) pollen sac exothecium (exact) PO:0006447 Often with thickened cell walls. Involved in anther dehiscence. If you are annotating to this structure for Zea mays or other grasses, please also add an annotation to the corresponding floret type. Choose the most specific term possible from: spikelet floret (PO:0009082), tassel floret (PO:0006310), lower floret of pedicellate spikelet of tassel (PO:0006313), lower floret of sessile spikelet of tassel (PO:0006315), upper floret of pedicellate spikelet of tassel (PO:0006314), upper floret of sessile spikelet of tassel (PO:0006316). PO:0006059 PO_GIT:355 葯壁外皮 (Japanese, exact) stamen epidermis microsporangium exothecium