Lappa IV was a planet, the fourth planet in orbit of the Lappa star system located in the territory of the Ferengi Alliance in the space of the galaxy's Alpha Quadrant.
History and specifics[]
Lappa IV is a Ferengi colony world. (Last Unicorn RPG module: Star Trek: Deep Space Nine Narrator's Toolkit)
Zan periculi, a species of flowering plant, was indigenous to this planet. (TNG novel: The Battle of Betazed)
Around stardate 43930.7, in 2366, DaiMon Tog left a bouquet of these flowers to Betazed when he kidnapped Lwaxana Troi, Deanna Troi and William T. Riker. When an USS Enterprise-D away team investigated the site of the crime, Lieutenant Commander Data found the bouquet and told Lieutenant Worf that the flowers were from Lappa iV. (TNG episode: "Ménage à Troi")
The tree species Draebidium calimus is also from there. (TNG novel: The Battle of Betazed)
In the 2370s decade, gardens along the front walkway of a prison in Darona's capital city Jarkana featured Lappa IV plants, as well as Diomedian scarlet moss. Deanna Troi spotted them while visiting in 2375. (TNG novel: The Battle of Betazed)