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University of Wyoming

» Floristics » Colorado Projects

Flat Tops, White River Plateau, and Vicinity

James P. Vanderhorst

Inventory dates: 1990, 1991

Thesis: Vanderhorst, J. P. 1993. Flora of the Flat Tops, White River Plateau, and Vicinity in Northwestern Colorado, vii + 129 pp.

This represents a thesis project by James P. Vanderhorst. Fieldwork was conducted during the summers of 1990 and 1991. The area encompassed the volcanic plateaus that make up the Flat Tops, the White River Plateau, parts of the Yampa, Williams Fork, White, and Colorado river valleys and most of the Grand Hogback (Eagle, Garfield, Moffat, Rio Blanco, and Routt counties) for a total of 2,500 mi2 ranging in elevation from 5,600 to 12,493 feet. Collected were 6,610 specimens documenting 884 total unique taxa. Species of conservation concern totaled seven documented at 27 sites. Also vouchered were 94 exotics and noxious weeds. Funding was provided by the White River and Routt National Forests, The Nature Conservancy, Colorado Native Plant Society, L. O. Williams, and the University of Wyoming.

Results & Data

Project Area:
2500 mi.2
# of Collections:
# of Taxa Collected:
# of State Records:
# of Sensitive Taxa:
7 (documented from 27 sites)
# of Exotic Taxa:
# of Noxious Weeds:

Project Map:

Map shows the approximate project boundary. Collection sites are displayed as red dots. Click on a dot to view site information and a list of specimens from that site.

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