Serpentine Seeps - Symbiotic Digestion - False Exits
Darlingtonia californica is endemic to Northern California and Oregon, thriving in serpentine soils with cold, running water. Unlike Sarracenia, the pitcher opening is inverted and covered by a hood, preventing rainwater accumulation. The characteristic "fangs" are actually a specialized leaf appendage (fishtail) that secretes nectar to lure prey directly to the trap entrance underneath the hood.
Once inside the hood, insects are disoriented by fenestrations (light windows) in the plant tissue. Attempting to fly towards the light, they crash into the walls and fall into the tube. Notably, Darlingtonia lacks its own digestive enzymes (proteases). Instead, it relies on a symbiotic community of bacteria and commensal invertebrates within the pitcher fluid to decompose the prey, absorbing the released nutrients directly through the pitcher walls.