Encara no tenim significats per a "cotyledon umbilicus".
1Cotyledon umbilicus: circumnutation of stolon, traced from 11.15 A.M. Aug. 25th to 11 A.M. 27th.
2Cotyledon umbilicus: circumnutation and downward movement of another stolon, traced on vertical glass, from 9.11 A.M. Aug. 25th to 11 A.M. 27th.
Aquesta col·locació està formada per: