Beauregard

From Memory Alpha, the free Star Trek reference.

Beauregard (also known as "Gertrude") was an animate, carnivorous Weeper plant, kept aboard the USS Enterprise in the ship's botanical garden by Yeoman Janice Rand, who also named it, in 2266.

The plant seemed to purr in her presence, and became agitated when it sensed that a Salt Vampire had boarded the ship. Lieutenant Hikaru Sulu, who studied the plant and was responsible for its keeping, insisted that "Gertrude" was a more appropriate name. (TOS: "The Man Trap")