| 0 | PI 123889 | | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | New Mexico, United States | | | Historic | 1937 | COLLECTED | | | | | | | | 1837408 | PI 123889 |
| 1 | PI 41771 | | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | Utah, United States | | | Historic | 1916 | COLLECTED | | | | | | | | 1509310 | PI 41771 |
| 2 | W6 61444 | CA067-29 | Psorothamnus emoryi (A. Gray) Rydb. | California, United States | W6 |  | | 2024 | | | | | | | | | 2167543 | W6 61444 |
| 3 | W6 60905 | CA067-10 | Psorothamnus emoryi (A. Gray) Rydb. | California, United States | W6 |  | | 2023 | | | | | | | Wild material | Very close to US-Mex border. Growing in a wash on the edge of the Algodones dunes. Estimated 35% viability, avg 5000 fruits per plant. Collecting while fruits are still a little immature | 2142543 | W6 60905 |
| 4 | W6 60911 | CA067-17 | Psorothamnus spinosus (A. Gray) Barneby | California, United States | W6 |  | | 2023 | | | | | | | Wild material | Fruits collected while slightly immature (nearly ready, but still a little green) | 2142549 | W6 60911 |
| 5 | W6 61228 | NV052-979 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby var. fremontii | Nevada, United States | W6 |  | | 2023 | | | | | | | Wild material | Dark Purple Corolla, fruits glandular throughout | 2142183 | W6 61228 |
| 6 | W6 48630 | NV052-507 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | United States | W6 |  | | 2014 | | | | | | | Wild material | | 1922062 | W6 48630 |
| 7 | W6 46913 | CA170-102 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby | California, United States | W6 | | | 2013 | | | | | | | Wild material | | 1914474 | W6 46913 |
| 8 | W6 46914 | CA170-104 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby | California, United States | W6 | | | 2013 | | | | | | | Wild material | | 1914475 | W6 46914 |
| 9 | W6 33328 | NM930-28 | Psorothamnus scoparius (A. Gray) Rydb. | New Mexico, United States | W6 |  | | 2008 | | | | | | | Wild material | | 1780321 | W6 33328 |
| 10 | W6 32626 | CA-17003-01 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby | United States | W6 |  | | 2007 | | | | | | | Wild material | | 1740370 | W6 32626 |
| 11 | W6 27175 | CA170-22 | Psorothamnus polydenius (Torr.) Rydb. | California, United States | W6 |  | | 2005 | | | | | | | Wild material | Shrub 0.6 meters tall. | 1674210 | W6 27175 |
| 12 | DLEG 950065 | DLEG 950065 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. minutifolius (Parish) Barneby | California, United States | | | Historic | 1995 | COLLECTED | 06/25/1995 | Inyo Co., E side of Kingston Range on old road from Tecopa to Shadow Valley. Elevation 3,600 ft. | | | Mojave desertscrub with Larrea tridentata, Ambrosia dumosa, Hymenoclea salsola, Yucca schidigera, Xylorhiza tortifolia, Sphaeralcea ambigua, Lycium andersonii, Ephedra nevadensis, Senna armata, Coleogyne ramosissima, Krameria erecta. | Wild material | Received from Dr. Alan Romspert, California Desert Studies Consortium, California State University, Fullerton. | 1527488 | DLEG 950065 |
| 13 | DLEG 950068 | DLEG 950068 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. minutifolius (Parish) Barneby | California, United States | | | Historic | 1995 | COLLECTED | 06/20/1995 | Inyo Co., S of Noonday Millsite (Lower Noonday Camp) in wash in Alexander Hills. Elevation 2,650 ft. | | | Mojave desertscrub with Larrea tridentata, Ambrosia dumosa, Ambroisa eriocentra, Salvia dorrii, Sarcostemma hirtellum, Eriogonum inflatum, Eriogonum fasciculatum var. polifolium, Sphaeralcea ambigua, Porophyllum gracile, Adenophyllum cooper | Wild material | Received from Dr. Alan Romspert, California Desert Studies Consortium, California State University, Fullerton. | 1526517 | DLEG 950068 |
| 14 | DLEG 950069 | DLEG 950069 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. minutifolius (Parish) Barneby | California, United States | | | Historic | 1995 | COLLECTED | 06/24/1995 | San Bernardino Co., S of Mesquite Mts. and N of Clark Mts. Elevation 4,000 ft. | | | Mojave desertscrub with Larrea tridentata, Ambrosia dumosa, Sphaeralcea ambigua, Encelia farinosa, Opuntia basilaris, Opuntia ramosissima, Echinocactus polycephalus, Gutierrezia microcephala, Salazaria mexicana. | Wild material | Received from Dr. Alan Romspert, California Desert Studies Consortium, California State University, Fullerton. | 1527489 | DLEG 950069 |
| 15 | DLEG 940059 | DLEG 940059 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. arborescens | California, United States | |  | Historic | 1994 | COLLECTED | 06/20/1993 | San Bernardino Co., 9 mi. on powerline road to turn off for The Buttes. (Road takes you into Kramer Jct.). | | | Mojave Desertscrub with Larrea tridentata, Ambrosia dumosa, Atriplex spinifera, Xylorhiza tortifolia, Lepidium fremontii, Amphopappus sp. | Wild material | Received from Dr. Alan Romspert. Seed from glabrous individuals growing on slopes. Hirsute individuals were observed along sandy washes and flats. | 1528158 | DLEG 940059 |
| 16 | DLEG 910162 | DLEG 910162 | Psorothamnus schottii (Torr.) Barneby | California, United States | | | Historic | 1991 | COLLECTED | 06/13/1991 | San Diego Co., Hwy 52 between Sweeney Pass and Imperial Co. line. | | | | Wild material | Received from Phyllis and Steve Stephens. | 1528161 | DLEG 910162 |
| 17 | DLEG 910270 | DLEG 910270 | Psorothamnus schottii (Torr.) Barneby | California, United States | | | Historic | 1991 | COLLECTED | 06/02/1991 | 10.8 mi. N of I-10 on road to Joshua Tree National Monument. | | | | Wild material | Intricately branched, glandular shrubs. | 1527093 | DLEG 910270 |
| 18 | DLEG 910281 | DLEG 910281 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | California, United States | | | Historic | 1991 | COLLECTED | 06/03/1991 | 0.7 mi. W of Hwy 14 on Pine Tree Canyon Rd. (turnoff to Pine Tree Canyon Rd. is ca. 14 mi. N of Mojave). | | | | Wild material | Aromatic, glandular shrubs. | 1527534 | DLEG 910281 |
| 19 | DLEG 910282 | DLEG 910282 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | California, United States | | | Historic | 1991 | COLLECTED | 06/03/1991 | 0.7 mi. W of Hwy 14 on Pine Tree Canyon Rd. (turnoff to Pine Tree Canyon Rd. is ca. 14 mi. N of Mojave). | | | | Wild material | Aromatic, glandular shrubs. Same site as 91-0281. | 1528159 | DLEG 910282 |
| 20 | DLEG 910294 | DLEG 910294 | Psorothamnus schottii (Torr.) Barneby | California, United States | | | Historic | 1991 | COLLECTED | 06/04/1991 | 54.8 mi. E of Hwy 14, on Hwy 136/190, through Death Valley. | | | Mojave Desertscrub. | Wild material | Intricately branched, glandular shrubs. | 1526903 | DLEG 910294 |
| 21 | DLEG 910298 | DLEG 910298 | Psorothamnus spinosus (A. Gray) Barneby | Arizona, United States | |  | Historic | 1991 | COLLECTED | 1991 | Pima Co., Residence of Art Cecil in central Tucson. | | | | Cultivated material | Plants were transported as seedlings from Palm Desert, California. Received from Art Cecil. | 1528163 | DLEG 910298 |
| 22 | DLEG 900297 | DLEG 900297 | Psorothamnus scoparius (A. Gray) Rydb. | New Mexico, United States | |  | Historic | 1990 | COLLECTED | 1986 | Socorro Co., Elevation 4800 ft. | | | | Wild material | Received from Jim Borland. | 1526457 | DLEG 900297 |
| 23 | DLEG 900534 | DLEG 900534 | Psorothamnus scoparius (A. Gray) Rydb. | Texas, United States | | | Historic | 1990 | COLLECTED | 07/04/1990 | El Paso Co., Rest area along I-10, ca. 30 mi. E of El Paso. | | | Chihuahuan Desertscrub on sand dunes with Atriplex canescens, Prosopis glandulosa var. torreyana. | Wild material | Intricately branched, nearly leafless, mounding shrubs to 1 m tall. Leaves simple; flowers small, dark blue. M. Johnson 90-032. | 1526754 | DLEG 900534 |
| 24 | DLEG 900633 | DLEG 900633 | Psorothamnus emoryi (A. Gray) Rydb. | Arizona, United States | | | Historic | 1990 | COLLECTED | 02/1990 | Yuma Co., N of I-10 in Yuma. | | | Low sand dunes. | Wild material | Shrubby, densely-branched, shrubs to 1 m tall. | 1527060 | DLEG 900633 |
| 25 | DLEG 900684 | DLEG 900684 | Psorothamnus spinosus (A. Gray) Barneby | Arizona, United States | |  | Historic | 1990 | COLLECTED | 1990 | | | | | Wild material | Received from Jim Brown. | 1527094 | DLEG 900684 |
| 26 | DLEG 890185 | DLEG 890185 | Psorothamnus spinosus (A. Gray) Barneby | | | | Historic | 1989 | COLLECTED | 07/1989 | | | | | | Received without data. Accession has been regenerated. | 1528162 | DLEG 890185 |
| 27 | DLEG 890335 | DLEG 890335 | Psorothamnus spinosus (A. Gray) Barneby | | | | Historic | 1989 | | | | | | | | Received without data from Mildred E. Mathias Botanical Garden, Los Angeles, CA. | 1527821 | DLEG 890335 |
| 28 | DLEG 890336 | DLEG 890336 | Psorothamnus schottii (Torr.) Barneby | | | | Historic | 1989 | | | | | | | | Received without data from Mildred E. Mathias Botanical Garden, Los Angeles, CA. | 1528160 | DLEG 890336 |