S1. Holotype of Archaeamphora longicervia gen. et sp. nov. Li.
S2. Photo of A. longicervia tank, showing the wing (ala) on left, the honey spoon area with reticulate venation in the middle left, intercostal anastomosing veins (arrows), as well as the thick edge on right (arrowhead).
S3. a-b. Photos showing the fluorescence in the honey spoon area, in the tank of A. longicervia, excited by a light with 500 nm wavelength. a. Compressed from a 3-D photo. b. At a deeper level. c. Three phyllodia-like leaves radiated out below the pitcher (#CB00772). d. An underdeveloped pitcher (#CB00666). d. Honey spoon protruded outwards (#HB0201). f. Counterpart is smooth and thin. Bar = 1 cm.
S4. a. A. longicervia. b. Sarracenia purpurea. c. Heliamphora heterodoxa.
S5. a. A. longicervia with tubular pitcher bases on stem that has grooves and ridges. b. Sarracenia purpurea. c. The dried flower stalk of Sarracenia purpurea with grooves and ridges.
S6. a-b. Liaoningocladus. c-d. A. longicervia is smaller and has leaves with less veins and tubular bases. Notice that a and c, and b and d, are in the same magnification respectively. Bar = 1 cm.
S7. a-b. Two seeds of A. longicervia with wing on left and narrow ridge on right (a on CB00754, b on CB00772). c. A seed of Sarracenia alata collected by Philip Sheridan. d. A seed of Heliamphora sp. collected by Andrea Wistuba from South America. Bar = 1 mm.
S8. Photos of Heliamphora heterodoxa var. exappendiculate. a. Showing the honey spoon protruded outwards. b. Showing the honey spoon cavity. c. Showing the plants. Photographed by Andrea Wistuba.
S9. Figures of porous glands from Juniper et al. (1989, p. 163, 202). A, D. Gland of Drosophyllum. A. SEM view of digested insect skeletal remain on gland that has cuticularized nectaries; D. Light microscopic view of the gland. B-C. Stalked gland of Drosea. B. SEM external view. C. TEM transaction. E. Sketch of the discontinuous wall in Sarracenia. (If it is necessary, a permission to use a copy of this part as supplementary material will be requested from the publisher.)
S10. Li et al., Discovery of oleanane in Archaeamphora longicervia gen. et sp. nov. Li.