Figures 15-17.
15. Fossil; Buckbean fen core, 665- to 670-cm depth.
16. Modern fruit with covering membrane; COLO 41239.
17. Modern fruit with membrane removed; COLO 41239.
Typha fruits.
Index card: Late Quaternary vegetation history of the Yellowstone Lake basin. Yellowstone National Park, Wyoming. n.d.
Published as plates 1-10 in U. S. Geological Survey. Professional Paper 729-E. 1976.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Baker, R.G. Collection.
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