root initial cell columella root cap initial cell A root initial cell (PO:0000059) that produces columella cells in the root cap (PO:0020123). In direct contact with quiescent center (PO:0020149). plant_anatomy PO:0020133 柱軸根冠始原細胞 (Japanese, exact) c&#233lula inicial de la columela del caliptra de la ra&#237z (Spanish, exact) columella root cap stem cell (exact) columella stem cell (exact) columella root cap initial (exact)