| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Psorothamnus dentatus Rydb. | E. W. Nelson 7170 | Mexico. Oaxaca. Santo Domingo. | isotype | 26850 |  |
| Psorothamnus polydenius (Torr. ex S.Watson) Rydb. | D. E. Atha 2361 with M. D. Windham, 02 Dec 2000 | United States of America. Utah. Washington Co. Southwest slope of Beaver Dam Mountains, in wash at Welcome Creek and along road to Lidel Ranch. | 840154 |  | |
| Psorothamnus junceus Rydb. | E. A. Goldman 1178 27 Jun 1905 | Mexico. San Pedro Martii Mts, Esperanza Cañon. | isotype | 26851 |  |
| Psorothamnus fremontii var. attenuatus Barneby | M. E. Jones 3883 13 May 1884 | United States of America. Arizona. Yucca. | holotype | 6833 |  |
| Psorothamnus fremontii var. attenuatus Barneby | M. E. Jones 3883 13 May 1884 | United States of America. Arizona. Yucca. | isotype | 6834 |  |
| Psorothamnus fremontii var. attenuatus Barneby | M. E. Jones 3883 13 May 1884 | United States of America. Arizona. Yucca. | isotype | 6835 |  |
| Psorothamnus fremontii var. attenuatus Barneby | M. E. Jones 3883 13 May 1884 | United States of America. Arizona. Yucca. | isotype | 6836 |  |
| Psorothamnus fremontii var. attenuatus Barneby | M. E. Jones 3883 13 May 1884 | United States of America. Arizona. Yucca. | isotype | 6837 |  |
| Psorothamnus polydenius (Torr. ex S.Watson) Rydb. | C. R. Annable 2408 with J. Annable, 16 Apr 1995 | United States of America. California. San Bernardino Co. Kingston Wash. | 43949 |  | |
| Psorothamnus polydenius (Torr. ex S.Watson) Rydb. | C. R. Annable 2549 with T. Hurst, 12 Jul 1995 | United States of America. Nevada. Nye Co. BLM: Battle Mountain District, Big Smoky Valley, ca. 25km NE of Carvers. | 44044 |  | |
| Psorothamnus arborescens (Torr. ex A.Gray) Barneby | C. R. Annable 2528 with D. Waterbury, 09 Jul 1995 | United States of America. California. Inyo Co. Inyo National Forest, Westgard Pass, at forest boundary. | 44072 |  | |
| Psorothamnus kingii (S.Watson) Barneby | A. H. Holmgren 10603 with Bassett Maguire, Doris Holmgren, & Celia Maguire, 27 Jun 1954 | United States of America. Nevada. Humboldt Co. 9 miles north of Winnemucca. | 802613 | ||
| Psorothamnus kingii (S.Watson) Barneby | A. H. Holmgren 10603 with Bassett Maguire, Doris Holmgren, & Celia Maguire, 27 Jun 1954 | United States of America. Nevada. Humboldt Co. 9 miles north of Winnemucca. | 802614 | ||
| Psorothamnus kingii (S.Watson) Barneby | T. L. Breene 298 10 Jun 1937 | United States of America. Nevada. Humboldt Co. 20 miles north of Winnemucca on state highway, west side of road. | 802615 | ||
| Psorothamnus kingii (S.Watson) Barneby | L. Constance 3694 with Elwood Molseed and Robert Ornduff, 18 Jul 1961 | United States of America. Nevada. Humboldt Co. Open sand dunes 8 miles north of Winnemucca. | 802619 | ||
| Psorothamnus kingii (S.Watson) Barneby | D. Griffiths 93 with E. L. Morris, Jul 1901 | United States of America. Nevada. Winnemucca, Northern Nevada. | 802620 | ||
| Psorothamnus kingii (S.Watson) Barneby | N. H. Holmgren 2877 with James L. Reveal, 14 Jul 1966 | United States of America. Nevada. Humboldt Co. Paradise Valley, US 95, 8 miles north of Winnemucca. | 802621 | ||
| Psorothamnus kingii (S.Watson) Barneby | N. H. Holmgren 4196 with John J. Fay, & Barton L. Bethers, 15 Jun 1970 | United States of America. Nevada. Humboldt Co. South end of Silver State Valley, about 12 miles west-northwest of Winnemucca. | 802622 | ||
| Psorothamnus kingii (S.Watson) Barneby | Vreeland XII-2 with Lugaski, 10-14 Jul 1978 | United States of America. Nevada. Humboldt Co. Winnemucca Sand Dunes. | 802624 | ||
| Psorothamnus kingii (S.Watson) Barneby | H. D. D. Ripley 9350 with R. C. Barneby, 25 Jun 1948 | United States of America. Nevada. Humboldt Co. 9 miles north of Winnemucca. | 802625 | ||
| Psorothamnus kingii (S.Watson) Barneby | H. D. D. Ripley 9350 with R. C. Barneby, 25 Jun 1948 | United States of America. Nevada. Humboldt Co. 9 miles north of Winnemucca. | 802626 |  | |
| Psorothamnus kingii (S.Watson) Barneby | A. P. Pinzl 12669 30 Sep 1997 | United States of America. Nevada. Humboldt Co. Sand dunes southeast end of Bloody Run Hills, 8 road miles north of the Humboldt River on US 95 (i.e. north of Winnemucca). | 802627 | ||
| Psorothamnus kingii (S.Watson) Barneby | A. Tiehm 6202 3 Aug 1980 | United States of America. Nevada. Churchill Co. Hot Springs Mountains, 6 air miles SSW of Desert Peak. | 802628 | ||
| Psorothamnus kingii (S.Watson) Barneby | A. Tiehm 7319 with Susan Tucker, 29 Jun 1982 | United States of America. Nevada. Humboldt Co. Bloody Run Hills, 2.7 road miles west of highway 140 on Sand Pass Road, then 1 road mile south. | 802629 | ||
| Psorothamnus kingii (S.Watson) Barneby | A. Tiehm 7532 with Matt Lavin, 10 Aug 1982 | United States of America. Nevada. Churchill Co. Blow Sand Mountains, sand dune area on east side of the range. | 802630 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | J. D. Morefield 3571 with Douglas H. McCarty, 04 May 1986 | United States of America. California. Inyo Co. Just northeast of warm springs at W base of Black Mountain, 2.4 miles N85°W of its summit. | 702668 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | J. D. Morefield JDM-1964(a) 27 May 1984 | United States of America. California. Inyo Co. Whie Mountains. 2.3 miles N85°W of Deep Springs College north of Crystal Peak. | 702669 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | D. Isely 9693 31 May 1965 | United States of America. California. Inyo Co. Entrance to Inyo National Forest, ca. 6 miles east of Big Pine. | 702670 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | P. H. Raven 6983 14 Jun 1954 | United States of America. California. Inyo Co. On the west side of Westgaard Pass, White Mountains. | 702672 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | P. C. Everett 21955 with E. K. Balls, 08 Jul 1956 | United States of America. California. Inyo Co. 8.8 miles northeast of jct. with U.S. Highway 6/395 above Big Pine on road to Westgard Pass. | 702673 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | Jack L. Reveal 68 with Arlene H. Reveal, 18 May 1962 | United States of America. California. Mono Co. 7 miles south of Benton on Highway 6, 3 miles north of the Harris Ranch. | 702675 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | Mrs. E. F. Shore 43 Summer 1939 | United States of America. Nevada. Collected at or near Reno. | 702676 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | A. A. Heller 8236 11 May 1906 | United States of America. California. Inyo Co. Base of the White Mountains east of Laws. | 702677 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | J. L. Reveal 388 06 Jul 1962 | United States of America. California. Mono Co. 2 miles west of Benton on a sandy ridge north of Highway 120 by 1/4 mile. | 702678 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | R. S. Mitchell 2001 17 May 1964 | United States of America. California. Inyo Co. On floor of Silver Canyon. White Mountains. | 702679 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | I. F. Tidestrom 9968 16 Jun 1919 | United States of America. California. Near Big Pine. | 702680 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | J. Beasley 971 with D. Beasley, 23 Apr 1992 | United States of America. Arizona. Coconino Co. Highway 89 N, 5.4 miles south of Navajo Bridge. | 702681 | ||
| Psorothamnus arborescens var. minutifolius (Parish) Barneby | S. Saufferer 165 10 May 1973 | United States of America. California. Inyo Co. About 2 miles north of Little Lake along Highway #395. | 702682 | ||
| Psorothamnus arborescens var. pubescens (Parish) Barneby | R. H. Peebles 14648 with H. W. Parker, 06 May 1940 | United States of America. Arizona. Coconino Co. 5 miles south of Navajo Bridge. | 702684 | ||
| Psorothamnus arborescens var. pubescens (Parish) Barneby | R. H. Peebles 14657 with H. W. Parker, 06 May 1940 | United States of America. Arizona. Coconino Co. 10 miles southwest of Navajo Bridge. | 702685 |