| 0 | PI 676227 | CA330/02-02 | Danthonia californica Bol. | California, United States | W6 |  | | 2005 | | | | | | | Wild material | | 1673829 | PI 676227 |
| 1 | PI 527709 | | Danthonia sp. | Washington, United States | W6 | | | 1989 | DONATED | 01/04/1989 | | | | | Uncertain improvement status | Erroneously labeled PI 238398 (Triticum aestivum) | 1422645 | PI 527709 |
| 2 | PI 443271 | | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | United States | | | Historic | 1980 | COLLECTED | | New York | | | | | | 1338207 | PI 443271 |
| 3 | PI 372208 | 37 | Danthonia cirrata Hack. & Arechav. | Uruguay | | | Historic | 1972 | DONATED | 02/27/1972 | | | | | | | 1279010 | PI 372208 |
| 4 | PI 284678 | No. 3057 | Danthonia cirrata Hack. & Arechav. | Uruguay | | | Historic | 1962 | COLLECTED | | | | | | | | 1687921 | PI 284678 |
| 5 | PI 284679 | No. 3058 | Danthonia cirrata Hack. & Arechav. | San José, Uruguay | | | Historic | 1962 | COLLECTED | | | | | | | Short, perennial winter grass. Not very productive. 10 | 1212693 | PI 284679 |
| 6 | PI 284680 | 3059 | Danthonia cirrata Hack. & Arechav. | San José, Uruguay | W6 | | Not Available | 1962 | COLLECTED | | Balneario Kiyu | | | | Uncertain improvement status | Short, perennial winter grass. Not very productive. 10 | 1212694 | PI 284680 |
| 7 | PI 284681 | 79 | Danthonia montevidensis Hack. & Arechav. | San José, Uruguay | W6 |  | Not Available | 1962 | COLLECTED | | Arazati | | | | Uncertain improvement status | Short perennial winter grass. Not very productive. 10 | 1212697 | PI 284681 |
| 8 | PI 284682 | 90 | Danthonia montevidensis Hack. & Arechav. | Canelones, Uruguay | W6 | | Not Available | 1962 | COLLECTED | | Balneario Fortin de Sta. Rosa | | | | Uncertain improvement status | Short perennial winter grass. Not very productive. 10 | 1212698 | PI 284682 |
| 9 | PI 284683 | 3050 | Danthonia montevidensis Hack. & Arechav. | Montevideo, Uruguay | W6 | | Not Available | 1962 | COLLECTED | | Parque Lecocq | | | | Uncertain improvement status | Short perennial winter grass. Not very productive. 10 | 1212701 | PI 284683 |
| 10 | PI 284684 | No. 3056 | Danthonia rhizomata Swallen | Lavalleja, Uruguay | | | Historic | 1962 | COLLECTED | | | | | | | Short perennial winter grass. Not very productive. 10 | 1212702 | PI 284684 |
| 11 | PI 253189 | | Danthonia alpina Vest | Former Serbia and Montenegro | W6 | | | 1958 | COLLECTED | | 30 miles east of Titograd, Montenegro,Yugoslavia | | | | Wild material | | 1194755 | PI 253189 |
| 12 | PI 240346 | | Danthonia sp. | Guinea | | | Historic | 1957 | COLLECTED | | From Nondugl. | | | | Wild material | | 1187465 | PI 240346 |
| 13 | PI 241050 | | Danthonia intermedia Vasey | | W6 | | | 1955 | COLLECTED | | From Fremont County, Wyoming. | | | | Wild material | | 1187644 | PI 241050 |
| 14 | PI 232247 | | Danthonia californica Bol. | California, United States | W6 | | | 1955 | COLLECTED | 01/01/1955 | Mat Davis Trail, Boot Jack Camp, Mount Tamalpais, Marin Co., California. | | | | Wild material | | 1184270 | PI 232247 |
| 15 | PI 232248 | | Danthonia intermedia Vasey | United States | | | Historic | 1955 | COLLECTED | 01/01/1955 | | | | | | | 1184271 | PI 232248 |
| 16 | PI 198842 | | Danthonia sp. | Spain | | | Historic | 1951 | COLLECTED | | | | | | | | 1676525 | PI 198842 |
| 17 | PI 186960 | | Danthonia cirrata Hack. & Arechav. | Florida, Uruguay | | | Historic | 1950 | COLLECTED | | | | | | | | 1667986 | PI 186960 |
| 18 | PI 173340 | | Danthonia cirrata Hack. & Arechav. | Uruguay | | | Historic | 1949 | COLLECTED | | | | | | | | 1150579 | PI 173340 |
| 19 | PI 142134 | | Danthonia sp. | South Africa | | | Historic | 1941 | COLLECTED | | | | | | | | 1866928 | PI 142134 |
| 20 | PI 19245 | | Danthonia sp. | Western Australia, Australia | | | Historic | 1906 | COLLECTED | | | | | | | | 1532394 | PI 19245 |
| 21 | PI 19248 | | Danthonia sp. | Western Australia, Australia | | | Historic | 1906 | COLLECTED | | | | | | | | 1576365 | PI 19248 |
| 22 | PI 19250 | | Danthonia sp. | Western Australia, Australia | | | Historic | 1906 | COLLECTED | | | | | | | | 1576367 | PI 19250 |
| 23 | PI 19251 | | Danthonia sp. | Western Australia, Australia | | | Historic | 1906 | COLLECTED | | | | | | | | 1639069 | PI 19251 |
| 24 | PI 19253 | | Danthonia sp. | Western Australia, Australia | | | Historic | 1906 | COLLECTED | | | | | | | | 1576369 | PI 19253 |
| 25 | PI 19256 | | Danthonia sp. | Western Australia, Australia | | | Historic | 1906 | COLLECTED | | | | | | | | 1576372 | PI 19256 |
| 26 | PI 7117 | | Danthonia californica Bol. | California, United States | | | Historic | 1901 | COLLECTED | | | | | | | | 1544647 | PI 7117 |
| 27 | W6 62216 | FWS0400-4 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | Tennessee, United States | W6 | | Not Available | 2024 | | | | | | | | Black Boxed 2024 Seeds of Success- Incorporated into the collection 4/1/2025 | 2169547 | W6 62216 |
| 28 | W6 62222 | FWS0401-1 | Danthonia sericea Nutt. | Georgia, United States | W6 | | Not Available | 2024 | | | | | | | | Black Boxed 2024 Seeds of Success- Incorporated into the collection 4/1/2025 | 2169553 | W6 62222 |
| 29 | W6 60982 | CA330-215 | Danthonia californica Bol. | California, United States | W6 |  | | 2023 | | | | | | | Wild material | 2 glumes subequal, glumes persist after disarticulation, blades thin and tapered and true green, lemmas have small awns. | 2142621 | W6 60982 |
| 30 | W6 61287 | OR090B-322 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2023 | | | | | | | Wild material | Plants 30-130 cm tall; cespitose, with short rhizomes. Leaf blades spread stiffly sideways or down. Inflorescences with sparse appearance: few large spikelets held out at stiff angles by panicle branches, branches strongly divergent to reflexed at maturity, and pedicels equal to or longer than the spikelets. Spikelets with 3-6 florets. Glumes with 4-7 veins. | 2142731 | W6 61287 |
| 31 | W6 60606 | OR110-1089 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2022 | | | | | | | Wild material | Population growing on a decommissioned road bed, so likely was planted as a restoration species | 2138544 | W6 60606 |
| 32 | W6 59325 | CA330-195 | Danthonia californica Bol. | California, United States | W6 | | | 2021 | | | | | | | Wild material | Perennial grass | 2120378 | W6 59325 |
| 33 | W6 59003 | NCBG-452 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | Maryland, United States | W6 | | Not Available | 2021 | | | | | | | Wild material | | 2116321 | W6 59003 |
| 34 | W6 59071 | NCBG-705 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | North Carolina, United States | W6 | | | 2021 | | | | | | | Wild material | | 2116382 | W6 59071 |
| 35 | W6 58591 | MARSB-449 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New Jersey, United States | W6 | | Not Available | 2021 | | | | | | | Wild material | Erect perennial, leaves with narrow flat blades, leaves at the base frequently dry and curly. Inflorescence terminal, few flowered contacted panicle of large spikelets. | 2113521 | W6 58591 |
| 36 | W6 58592 | MARSB-450 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New Jersey, United States | W6 | | | 2021 | | | | | | | Wild material | Dense tufts. Leaves born mostly near base, blades curly. lower sheaths often contain cleistogamous spikelets. inflorescence contracted, racemiform. | 2113522 | W6 58592 |
| 37 | W6 58629 | MARSB-554 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New York, United States | W6 | | | 2021 | | | | | | | Wild material | Round stem, narrow inflorescence with tan seed, inflorescence branches point upwards and hug the stem. Tufts of curly basal leaves. | 2113559 | W6 58629 |
| 38 | W6 58433 | CA190B-143 | Danthonia californica Bol. | California, United States | W6 | | Not Available | 2020 | | | | | | | Wild material | Coastal prairie grasslands. ûHairy collars at stem nodes. Spikelets at ends of flowering culms. Few flowers per spikelet. Spikelets prostrate to decumbent. Spiklets resemble thous of Wild Oat (Avena spp.). | 2110327 | W6 58433 |
| 39 | W6 58480 | CA190C-62 | Danthonia californica Bol. | California, United States | W6 | | | 2020 | | | | | | | Wild material | Spikelets purple, plants growing in dense clumps. | 2110374 | W6 58480 |
| 40 | W6 57750 | CA330-189 | Danthonia californica Bol. | California, United States | W6 | | | 2020 | | | | | | | Wild material | SOS 92nd Shipment | 2105048 | W6 57750 |
| 41 | W6 57055 | MARSB-130 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New Jersey, United States | W6 |  | | 2019 | | | | | | | Wild material | | 2097494 | W6 57055 |
| 42 | W6 57153 | MARSB-353 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New York, United States | W6 |  | Not Available | 2019 | | | | | | | Wild material | | 2097592 | W6 57153 |
| 43 | W6 56031 | OR090B-233 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2019 | | | | | | | Wild material | Danthonia californica | 1971277 | W6 56031 |
| 44 | W6 54791 | NCBG-704 | Danthonia sericea Nutt. | North Carolina, United States | W6 |  | | 2018 | | | | | | | Wild material | Danthonia sericea | 1966017 | W6 54791 |
| 45 | W6 55098 | CA330-178 | Danthonia californica Bol. | California, United States | W6 |  | | 2018 | | | | | | | Wild material | Danthonia californica | 1966325 | W6 55098 |
| 46 | W6 53441 | MT050-40 | Danthonia intermedia Vasey | Montana, United States | W6 | | | 2018 | | | | | | | Wild material | | 1958176 | W6 53441 |
| 47 | NA 82700 | NA 82700 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | District of Columbia, United States | NA | | Not Available | 2015 | COLLECTED | 06/25/2015 | U.S. National Arboretum, north side of Mt. Hamilton [USNA location code MTHAM-W] | 38.91138000, -76.97460000 | | Woodland edge. | | | 1953580 | NA 82700 |
| 48 | NA 82690 | NA 82690 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | District of Columbia, United States | NA | | Not Available | 2015 | COLLECTED | 06/19/2015 | U.S. National Arboretum, across street from Grove of State Trees restrooms [USNA location code M-WOODS-W] | 38.90726000, -76.97043000 | | Woodland edge. | | | 1953579 | NA 82690 |
| 49 | W6 48842 | MARSB-5 | Danthonia compressa Austin | New Jersey, United States | W6 |  | | 2015 | | | | | | | Wild material | | 1922852 | W6 48842 |
| 50 | W6 48844 | MARSB-64 | Danthonia compressa Austin | West Virginia, United States | W6 |  | | 2015 | | | | | | | Wild material | | 1922853 | W6 48844 |
| 51 | W6 48843 | MARSB-60 | Danthonia compressa Austin | Pennsylvania, United States | W6 |  | | 2015 | | | | | | | Wild material | | 1922912 | W6 48843 |
| 52 | W6 48845 | MARSB-58 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New York, United States | W6 |  | | 2015 | | | | | | | Wild material | | 1922913 | W6 48845 |
| 53 | W6 47652 | OR110-423 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2014 | | | | | | | Wild material | | 1919538 | W6 47652 |
| 54 | W6 46820 | UCBG-89 | Danthonia californica Bol. | California, United States | W6 | | | 2013 | | | | | | | Wild material | | 1914384 | W6 46820 |
| 55 | W6 46821 | CO932-299 | Danthonia parryi Scribn. | Colorado, United States | W6 | | | 2013 | | | | | | | Wild material | | 1914385 | W6 46821 |
| 56 | NA 81472 | NA 81472 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | District of Columbia, United States | NA | | Not Available | 2013 | COLLECTED | 06/26/2013 | U.S. National Arboretum | | | Gravelly roadside and grassy oak grove. | | | 1951651 | NA 81472 |
| 57 | W6 44090 | AK930-155 | Danthonia intermedia Vasey | Alaska, United States | W6 |  | Not Available | 2012 | | | | | | | Wild material | | 1900530 | W6 44090 |
| 58 | W6 44333 | CH-136 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2012 | | | | | | | Wild material | | 1901132 | W6 44333 |
| 59 | W6 41229 | OR931-54 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2011 | | | | | | | Wild material | | 1868754 | W6 41229 |
| 60 | W6 40423 | OR100-118 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2011 | | | | | | | Wild material | | 1861184 | W6 40423 |
| 61 | W6 40424 | OR100-130 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2011 | | | | | | | Wild material | | 1861185 | W6 40424 |
| 62 | W6 40425 | OR100-138 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2011 | | | | | | | Wild material | | 1861186 | W6 40425 |
| 63 | W6 40426 | CA330-114 | Danthonia californica Bol. | California, United States | W6 |  | | 2011 | | | | | | | Wild material | | 1861187 | W6 40426 |
| 64 | W6 35335 | CO932-154 | Danthonia intermedia Vasey | Colorado, United States | W6 |  | | 2009 | | | | | | | Wild material | Lemmas pilose on or near margins, glaberous on back; Culms erect, 1-5dm tall | 1808166 | W6 35335 |
| 65 | W6 35433 | UT933-61 | Danthonia intermedia Vasey | Utah, United States | W6 |  | | 2009 | | | | | | | Wild material | Height: 1 to 1.5 feet | 1808258 | W6 35433 |
| 66 | W6 35434 | UT933-62 | Danthonia intermedia Vasey | Utah, United States | W6 |  | Not Available | 2009 | | | | | | | Wild material | Height: 1 to 1.5 feet | 1808259 | W6 35434 |
| 67 | W6 35435 | UT933-63 | Danthonia intermedia Vasey | Utah, United States | W6 |  | | 2009 | | | | | | | Wild material | Height: 1 to 1.5 feet. | 1808260 | W6 35435 |
| 68 | W6 35436 | UT933-64 | Danthonia intermedia Vasey | Utah, United States | W6 |  | | 2009 | | | | | | | Wild material | Height: 1 to 1.5 feet | 1808261 | W6 35436 |
| 69 | W6 35437 | UT933-65 | Danthonia intermedia Vasey | Utah, United States | W6 |  | | 2009 | | | | | | | Wild material | Height: 1 to 1.5 feet | 1808262 | W6 35437 |
| 70 | W6 33211 | OR110-MEDFORD4 | Danthonia intermedia Vasey | Oregon, United States | W6 |  | Not Available | 2008 | | | | | | | Wild material | | 1780157 | W6 33211 |
| 71 | NA 77927 | NA 77927 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | | NA | | Not Available | 2007 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Danthonia spicata. | 2151155 | NA 77927 |
| 72 | W6 27605 | The Basket Slough germplasm | Danthonia californica Bol. | Oregon, United States | W6 | | | 2005 | DEVELOPED | PRE 1999 | | | | | Cultivated material | | 1681508 | W6 27605 |
| 73 | W6 26858 | ROSE-9 | Danthonia californica Bol. | Oregon, United States | W6 |  | | 2005 | | | | | | | Wild material | Grasslike 0.07 meters tall. | 1673897 | W6 26858 |
| 74 | W6 27161 | CA330-26 | Danthonia californica Bol. | California, United States | W6 |  | | 2005 | | | | | | | Wild material | Grasslike meters tall. | 1674196 | W6 27161 |
| 75 | W6 19122 | 95-30 | Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. | New York, United States | W6 | | | 1996 | COLLECTED | 07/13/1995 | Blydenburgh County Park, Smithtown, New York. | 40.84166667, -73.22500000 | | In very sandy soil along a horse trail. | Wild material | | 1539267 | W6 19122 |