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University of Wyoming

» Floristics » Montana Projects

Phillips and Valley Counties, Montana

Joseph L. M. Charboneau

Inventory dates: 2010, 2011

Thesis: Charboneau, J. L. M. 2013. A Floristic Inventory of Phillips and Valley Counties, Montana, U.S.A., vi + 68 pp.

This represents the thesis project by Joseph L. M. Charboneau. Fieldwork was conducted during the summers of 2010 and 2011 on lands managed by the Glasgow and Malta BLM Field Offices, Charles M. Russell National Wildlife Refuge, Bowdoin National Wildlife Refuge, the American Prairie Reserve, and the Matador Ranch (The Nature Conservancy). The area encompassed grasslands and shrublands on the glaciated plains of Montana’s Hi-Line, a portion of the Missouri River Breaks, and the Little Rocky Mountains (Phillips and Valley counties) for a total of 8,954 mi2 ranging in elevation from 2,020 to 5,720 feet. Collected were 12,771 specimens documenting 762 unique taxa. An additional 70 “historical” records at MONT, MONTU, and RM/USFS raised the figure to ¬¬832 total unique taxa. Taxa of conservation concern totaled 15 documented at 34 sites. Also vouchered were 108 exotics including 10 noxious weeds. Funding was provided by the Bureau of Land Management, Dr. Thomas Ford (Aven Nelson Fellowship in Systematic Botany), and the University of Wyoming.

Results & Data

Project Area:
8954 mi.2
# of Collections:
12771 *
# of Taxa Collected:
762 *
# of Historical Taxa:
70 (additional taxa documented only from historical collections)
# of State Records:
# of Sensitive Taxa:
15 (documented from 34 sites)
# of Exotic Taxa:
# of Noxious Weeds:

* Data for this project have not yet been released.

Project Map:

Map shows the approximate project boundary. Collection sites and specimen data for this project have not yet been released.

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