| Name | Chara sejuncta f. elongata Allen |
| Authorship | Allen |
| Rank | Forma |
| Placed in | Chara sejuncta A. Braun |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Chara sejuncta f. elongata Allen |
| Identification made in | [no date] (2) |
| Name | Chara sejuncta f. elongata Allen |
| Authorship | Allen |
| Rank | Forma |
| Placed in | Chara sejuncta A. Braun |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Chara sejuncta f. elongata Allen |
| Identification made in | [no date] (2) |