Region
Country
Specimen coordinates in square brackets [ ] have been approximated based on political units.
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| Mexico | | |
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[23°37'00"N]
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[102°34'30"W]
| 1898 | | Edward Palmer | 416 | MO |
| Mexico | Chihuahua | |
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28°37'48"N
|
106°04'48"W
| 02 September 1885 | | Cyrus G. Pringle | 479 | MO |
| Mexico | Chihuahua | |
|
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| 10 Aug 1941 - 12 Aug 1941 | | Ivan Murray Johnston | 8180 | MO |
| Mexico | Chihuahua | |
1280 m
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| 1 Aug 1939 | | LeRoy H. Harvey | 1370 | MO |
| Mexico | Chihuahua | |
1400 m
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| 18 August 1939 | | LeRoy H. Harvey | 1537 | MO |
| Mexico | Chihuahua | |
|
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| 1976 | | André Enriquez | 74 | MO |
| Mexico | Coahuila | |
|
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| 21 August 1941 | | Ivan Murray Johnston | 8288 | MO |
| Mexico | Coahuila | |
1500 m
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| 27 Aug 1941 | | Ivan Murray Johnston | 8538 | MO |
| Mexico | Coahuila | |
|
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| 19 Sept 1941 - 20 Sept 1941 | | Ivan Murray Johnston | 9275 | MO |
| Mexico | Coahuila | |
1100 m
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29°05'00"N
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102°24'00"W
| 13 Sept. 1972 | | Fernando Chiang C., Thomas L. Wendt & Marshall C. Johnston | 9192 | MO |
| Mexico | Coahuila | |
|
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| 16 Sept 1941 | | Ivan Murray Johnston | 9174 | MO |
| Mexico | Coahuila | |
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27°57'36"N
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103°57'00"W
| 4 Oct 1941 - 5 Oct 1941 | | Robert M. Stewart & Ivan Murray Johnston | 1962 | MO |
| Mexico | Coahuila | |
|
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| 21 Aug 1941 | | Ivan Murray Johnston | 8288 | MO |
| Mexico | Coahuila | |
|
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| 18 Aug 1941 | | Ivan Murray Johnston | 8219 | MO |
| Mexico | Coahuila | |
|
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| 20 August 1941 | | Ivan Murray Johnston | 8258 | MO |
| Mexico | Coahuila | |
|
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| 19 Sept 1941 - 20 Sept 1941 | | Ivan Murray Johnston | 9273 | MO |
| Mexico | Coahuila | |
1750-1775 m
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28°44'00"N
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102°31'00"W
| 14 Sept. 1972 | | Fernando Chiang C., Thomas L. Wendt & Marshall C. Johnston | 9207 | MO |
| Mexico | Coahuila | Saltillo |
2000 m
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25°00'00"N
|
101°05'00"W
| 5 Jun 1990 | | José Á. Villarreal-Quintanilla, Jesús Valdés-Reyna & Miguel A. Carranza P. | 2061 | MO |
| Mexico | Durango | |
6100 ft
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| 27 August 1971 | | LeRoy H. Harvey | 8873 | MO |
| Mexico | Nuevo León | |
2040 m
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24°48'38"N
|
100°31'23"W
| 18 Sept 2003 | | Paul M. Peterson, Jesús Valdés-Reyna & George S. Hinton | 17815 | MO |
| Mexico | Nuevo León | |
1925 m
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24°37'00"N
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100°42'00"W
| 19 June 1972 | | Fernando Chiang C., Thomas L. Wendt & Marshall C. Johnston | 7984 | MO |
| Mexico | Nuevo León | Galeana |
|
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| 31 Jul 1935 | | Cornelius H. Muller | 2289 | MO |
| United States | | |
|
[45°10'01"N]
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[119°17'31"W]
| 07 December 1941 | | Benjamin C. Tharp | s.n. | MO |
| United States | | |
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[45°10'01"N]
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[119°17'31"W]
| August 1926 | | Benjamin C. Tharp | s.n. | MO |
| United States | | |
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[45°10'01"N]
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[119°17'31"W]
| May 1849 - October 1849 | | Charles (Carlos) Wright | s.n. | MO |
| United States | | |
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[45°10'01"N]
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[119°17'31"W]
| Sept 5 1853 - Sept 5 1854 | | John Milton Bigelow | s.n. | MO |
| United States | Arizona | |
|
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| 8 Oct 1903 | | David Griffiths | 6121 | MO |
| United States | Arizona | |
5000 ft
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| 10 September 1903 | | Thomas | 26 | MO |
| United States | Arizona | |
|
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| Sept 12 1884 | | Cyrus G. Pringle | 15975 | MO |
| United States | Arizona | |
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| | | Sutton Hayes | s.n. | MO |
| United States | Kansas | Hamilton |
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[38°01'00"N]
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[101°40'00"W]
| 23 AUG 1961 | | Lloyd C. Hulbert | 4125 | UMO |
| United States | Kansas | Morton |
|
[37°12'00"N]
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[101°48'00"W]
| Aug. 28, 1929 | | Frank C. Gates | 16153 | MO |
| United States | Kansas | Stanton |
3430 f
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[37°34'00"N]
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[101°47'00"W]
| Aug.28, 1929 | | Frank C. Gates | 16117 | MO |
| United States | New Mexico | |
|
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| 03 August 1895 | | A. Isabel Mulford | 660 | MO |
| United States | New Mexico | Luna |
4900 ft
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[32°39'10"N]
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[108°03'10"W]
| 31 August 1972 | | LeRoy H. Harvey & John T. Witherspoon | 8994 | MO |
| United States | New Mexico | Luna |
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[32°39'10"N]
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[108°03'10"W]
| 31 August 1972 | | LeRoy H. Harvey & John T. Witherspoon | 8993 | MO |
| United States | New Mexico | Socorro |
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[34°02'00"N]
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[106°53'00"W]
| 28 AUG 1965 | | Lloyd W. Hess, David B. Dunn & David L. Spellman | 439 | UMO |
| United States | New Mexico | Socorro |
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[34°02'00"N]
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[106°53'00"W]
| 20 SEP 1948 | | David B. Dunn | 4955 | UMO |
| United States | New Mexico | Socorro |
5200 f
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[34°02'00"N]
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[106°53'00"W]
| 20 SEP 1948 | | David B. Dunn | 4984 | UMO |
| United States | Oklahoma | |
|
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| June 23, 1913 | | George W. Stevens | 1285 | MO |
| United States | Texas | |
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| May 1849 - October 1849 | | Charles (Carlos) Wright | 735 | US |
| United States | Texas | |
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| May 24, 1902 | | Samuel M. Tracy | 7959 | MO |
| United States | Texas | |
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| August 25, 1915 - August 30, 1915 | | A.S. Hitchcock | 1365 | MO |
| United States | Texas | |
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| 24 June 1902 | | J. Reverchon | s.n. | MO |
| United States | Texas | |
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32°26'55"N
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099°43'58"W
| May 24, 1902 | | Samuel M. Tracy | 7959 | MO |
| United States | Texas | |
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| 7/9/41 | | Benjamin C. Tharp | s.n. | MO |
| United States | Texas | |
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| 16 September 1916 | | Mary S. Young | s.n. | MO |
| United States | Texas | |
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| May 1849 - October 1849 | | Charles (Carlos) Wright | 735 | MO |
| United States | Texas | Brewster |
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[29°50'00"N]
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[103°15'20"W]
| 18 JUL 1941 | | R. Rose Innes & Barton H. Warnock | 21819 | UMO |
| United States | Texas | Brewster |
1610 m
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30°13'00"N
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103°51'00"W
| 14 September 1991 | | Alan E. Brant, Richard D. Noyes & Chris D. Sherman | 2228 | MO |
| United States | Texas | Brewster |
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[29°50'00"N]
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[103°15'20"W]
| August 8, 1940 | | Barton H. Warnock | 20316 | MO |
| United States | Texas | Brewster |
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[29°50'00"N]
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[103°15'20"W]
| June 30, 1940 | | Barton H. Warnock | 20314 | MO |
| United States | Texas | Brewster |
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[29°50'00"N]
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[103°15'20"W]
| August 8, 1940 | | Barton H. Warnock | 20316 | MO |
| United States | Texas | Childress |
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[34°32'00"N]
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[100°13'00"W]
| October 28, 1962 | | Donovan S. Correll | 26436 | MO |
| United States | Texas | Culberson |
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[31°27'00"N]
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[104°35'00"W]
| Aug. 16, 1947 | | Umaldy T. Waterfall | 7802 | MO |
| United States | Texas | El Paso |
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[31°48'00"N]
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[106°12'00"W]
| 10 July 1900 | | Heinrich K.D. Eggert | s.n. | MO |
| United States | Texas | Howard |
|
[32°18'00"N]
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[101°27'00"W]
| 11 june 1900 | | Heinrich K.D. Eggert | s.n. | MO |
| United States | Texas | Hudspeth |
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[31°28'00"N]
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[105°18'00"W]
| July 30, 1943 | | Benjamin C. Tharp | 43496 | MO |
| United States | Texas | Hudspeth |
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[31°28'00"N]
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[105°18'00"W]
| Aug. 20 1946 | | Umaldy T. Waterfall | 6563 | MO |
| United States | Texas | Jeff Davis |
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[30°42'00"N]
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[104°05'00"W]
| 29 June 1977 | | WEEDIN | 827 | MO |
| United States | Texas | Jeff Davis |
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[30°42'00"N]
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[104°05'00"W]
| 8 July 1959 | | Frank W. Gould | 8783 | MO |
| United States | Texas | Jeff Davis |
1420 m
|
30°33'00"N
|
104°41'00"W
| 17 September 1991 | | Alan E. Brant, Richard D. Noyes & Chris D. Sherman | 2243 | MO |
| United States | Texas | Oldham |
|
[35°25'00"N]
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[102°36'00"W]
| | | J. Reverchon | 2872 | MO |
| United States | Texas | Oldham |
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[35°25'00"N]
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[102°36'00"W]
| June 24, 1902 | | J. Reverchon | 2872 | MO |
| United States | Texas | Pecos |
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[30°45'20"N]
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[102°45'20"W]
| 07 June 1943 | | Benjamin C. Tharp | 43A33 | SI |
| United States | Texas | Pecos |
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[30°45'20"N]
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[102°45'20"W]
| 25 June 1943 | | Benjamin C. Tharp | 43-497 | MO |
| United States | Texas | Pecos |
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[30°45'20"N]
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[102°45'20"W]
| 22 JUN 1943 | | Benjamin C. Tharp | 43-493 | UMO |
| United States | Texas | Pecos |
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[30°45'20"N]
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[102°45'20"W]
| 07 June 1943 | | Benjamin C. Tharp | 43A33 | MO |
| United States | Texas | Presidio |
5000 f
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[29°55'00"N]
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[104°15'20"W]
| July 23, 1975 | | W.J. Foster | 126 | MO |
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