Other notable characteristics
Sarracenia flava var. cuprea has downward pointing needle-like hairs on the underside of its copper lid and a second arsenal of hairs deeper within the pitcher, at its lowest point to prevent climbing insects from escaping. Where they’re not hairy and stabby, pitcher interiors are waxy and smooth, preventing insects from crawling their way to freedom. At the bottom of the pitcher, enzymes do their part to drown and digest an insect’s soft tissues. Digestive liquid levels rise as more insects are caught and pile higher within the pitcher.
Trumpet pitcher plants also produce phyllodia, a second type of leaf, in the late summer. Phyllodia are flat, long, straight or curled, and come to a point at their ends. They are not carnivorous. Unlike the pitchers that die back during dormancy, phyllodia can stick with the pitcher plant until the next growing season, perhaps providing a means to photosynthesize during winter months.