Taxonomic history:
1753: Linnaeus described this species as Trillium sessile in Species Plantarum, 1st ed., p. 340.
today: The current name for this species is Trillium sessile L.
original Latin diagnosis
Trillium flore sessili erecto.
English translation
Trillium with a flower pedunculate [and] erect.
| Trillium | Trillium |
| with a flower | flore - ablative singular of third declension masculine noun flos, floris |
| sessile | sessili - ablative singular masculine of group B adjective sessilis, -is, -e; modifies flore |
| [and] | [added for smoother reading] |
| erect. | erecto - ablative singular masculine of perfect passive participle of third conjugation verb erigo, erigere, erexi, erectum; modifies flore |