The carnivorous syren plants were native to the planet Kashyyyk. They could be found in the dangerous jungles of the planet's surface, in the third level down from the canopy level where the Wookiees dwelled.
A syren plant could be identified by its two ovular, bright yellow petals that were divided in half. The petals were mounted on an extremely thick, mottled, blood-red stock. In the middle of the petals was a tuft of glossy white fibers. To many casual observers, the plant might have seemed little more than a giant, beautiful, oversized flower.
The tuft of syren fibers within the plant emitted a large number of pheromones, which could lure unsuspecting prey. If a creature was lured within proximity of the yellow petals, it was unlikely to survive. Touching the blood-red inner flesh of a syren plant's petals would cause it to reflexively close in one swift powerful movement. The prey, now trapped by the plant's powerful and sticky petals, would be painfully digested.
As a rite of passage, many young Wookiees would attempt to harvest the plant's syren fibers at the Well of the Dead. A young Wookiee would bring a few stronger friends to hold the powerful petals in place while he attempted to harvest the fibers as quickly as possible. Thereafter, he would wear the syren fibers as a symbol of virility and bravery. Despite the help from comrades, some young Wookiees lost limbs to the plant. Before he attended Luke Skywalker's Jedi Praxeum, Lowbacca managed to harvest the syren fibers by himself. While the plant's reflexes were unwittingly triggered, Lowbacca sensed it immediately and managed to clear himself from the flower's range before it closed. Returning home, he wove the fibers into a belt.
- Episode I Adventures 7: Capture Arawynne
- "What They Called Me"—Star Wars Tales 5
- What They Called Me"—Star Wars Gamer 4 "
- Tatooine Ghost (Mentioned only)
- Young Jedi Knights: Heirs of the Force (First appearance) (Appears in flashback(s))
- Young Jedi Knights: Shadow Academy (Mentioned only)
- Young Jedi Knights: Lightsabers (Mentioned only)
- Young Jedi Knights: Darkest Knight
- Young Jedi Knights: Diversity Alliance
- Young Jedi Knights: Return to Ord Mantell (Mentioned only)
- Young Jedi Knights: Crisis at Crystal Reef
- The New Jedi Order: Agents of Chaos I: Hero's Trial
- The New Jedi Order: Dark Journey (Mentioned only)
- The Essential Guide to Planets and Moons
- Star Wars: Behind the Magic
- Secrets of Kashyyyk"—Star Wars Gamer 4 "
- The Official Star Wars Fact File 42 (KAS4, Kashyyyk)