Upper pitchers are similar but often lack blotches, being a solid green, yellow, orange, or red, although reddish aerial traps occasionally do bear some darker markings.
When considering the structure of upper pitchers, they typically resemble each other but usually do not have blotches; instead, they are uniformly colored in shades like green, yellow, orange, or red. Reddish aerial traps may occasionally show fainter darker markings.