Favinit plants were a variety of flowers native to Vulcan.
Tuvok once created a hybrid of a South American orchid and a Vulcan favinit plant.
At first, the hybrid was sickly, but after a few weeks both plants adapted to their new condition and became stronger than either had been alone. (VOY: "Alliances")
The flower used is, in reality, a Miltassia Charles M. Fitch orchid of the oncidium alliance.