The Gree were a species of aliens with a pronounced proboscis.
The stimulation of a Gree's follicles on their proboscis resulted in a swelling of the auricular canal, according to The Doctor. (VOY: "Elogium")
This species was only mentioned in dialogue.
The Ferengi food gree-worms may be connected to this people, or their homeworld.
Gree was also the name of a species in Star Wars.
According to Star Trek: Star Charts (p. 82), there was a star system named Gree, which might possibly be the system of origin for this species, in the Delta Quadrant. This was a quaternary system with a pair of F-class stars, a G-class, and a K-star.