| Name | Steironema lanceolatum var. hybridum (Michaux) A. Gray |
| Authorship | (Michaux) A. Gray |
| Rank | Variety |
| Placed in | Steironema lanceolatum (Walter) A. Gray |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Steironema lanceolatum var. hybridum (Michaux) A. Gray |
| Identification made in | [no date] (1) |