| In the old calendar, an intercalary month of 22 or 23 days called Mercedonius was inserted after the Festival of Terminalia in every other year or as needed. |
| It was not until well into Roman times that an intercalary day once every four years was instituted to retain coincidence. |
| The intercalary month by which the Arabs adjusted the lunar months to the solar year is abolished, severing the connection between the religious rituals and the seasons. |
| Leaves are formed from an intercalary meristem which is positioned within the leaf sheaths of subtending leaves. |
| In many instances intercalary meristems function for only a short time and eventually completely differentiate into mature tissues. |
| In these stems and leaves with intercalary meristems, the upward transpiration stream clearly bypassed most of the enlarging cells. |
