A portion of plant tissue (PO:0009007) that is the outer layer or layers of a sporangium (PO:0025094) early in sporangium development (GO:0043582).
Term used for bryophytes. May have one or more layers. An amphithecium may give rise to an exothecium and other layers of a sporangium wall (jacket layer or layers). In true mosses, the amphithecium gives rise to the sporangium wall and the peristome. In hornworts and peat mosses, it gives rise to the sporangium wall and sporogenous tissue.
to all annotated objects annotated to amphithecium.
to all direct and indirect annotations
to all direct and indirect annotations download (limited to first 10,000)