Quaternary vegetation history of the Yellowstone Lake Basin. Fossil perigynia, fruits, and seeds from Buckbean fen core and modern perigynia, fruits, and seeds. Yellowstone National Park, Wyoming. No date.

Album caption: Plate 9. Fossil perigynia, fruits, and seeds from Buckbean fen core and modern perigynia, fruits, and seeds. X 16. Figures 1, 2. 1. Fossil; 165- to 170-cm depth. 2. Modern; COLO 53127. Carex aquatilis perigynia and fruits. Figures 3-5. 3. Fossil; 0- to 5-cm depth. 4, 5. Modern; R.B. Baker collection. Carex canescens perigynia and fruits. Figures 6-8. 6. Fossil; 0- to 5-cm depth. 7, 8. Modern; RGB--147. Carex diandra perigynia and fruits. Figures 9-11. 9. Fossil, corroded; 475- to 480-cm depth. 10, 11. Modern; COLO 95235. Eleocharis macrostachya fruits. Figures 12-14. 12. Fossil; 435- to 440-cm depth. 13, 14. Modern; COLO 20242. Glyceria maxima ssp. grandis seeds. Figures 15, 16. 15. Fossil; 475- to 480-cm [...]