part of is part of part of shoot axis apex shoot system meristem apical meristem shoot apical meristem meristema apical del epiblasto (epiblastema) (Spanish, exact) SAM (exact) 茎頂分裂組織 (Japanese, exact) A shoot system meristem (PO:0006079) formed at the apex of the shoot axis (PO:0025029), including those originating from an axillary bud meristem (PO:0000232). PO:0020148 primary shoot meristem (related) plant_anatomy PO_GIT:472 promeristem (broad)