| 0 | PI 320403 | Col. No. K-324 | Osmundastrum cinnamomeum (L.) C. Presl | Gangwon-do, Korea, South | | | Historic | 1967 | COLLECTED | | Shady areas along trail on Mt. Sorak | | 870 | | | | 1712576 | PI 320403 |
| 1 | PI 320404 | Col. No. K-431 | Osmunda japonica Thunb. | Jeju-teukbyeoljachido, Korea, South | | | Historic | 1967 | COLLECTED | | In dense shade along trail up Mt. Halla, Cheju Island | | 850 | | | | 1712577 | PI 320404 |
| 2 | NA 82319 | NA 82319 | Osmunda regalis L. | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmunda regalis. No info. Planted in Fern Valley previous to 1986. Form received: unknown propagule type. | 2152879 | NA 82319 |
| 3 | NA 71639 | NA 71639 | Osmunda regalis L. | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmunda regalis. Old plants found growing in Fern Valley | 2149046 | NA 71639 |
| 4 | NA 71619 | NA 71619 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmundastrum cinnamomeum. Old plants found growing in Fern Valley | 2149030 | NA 71619 |
| 5 | NA 71608 | NA 71608 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmundastrum cinnamomeum. Old plants found growing in Fern Valley | 2149022 | NA 71608 |
| 6 | NA 71607 | NA 71607 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmundastrum cinnamomeum. Old plants found growing in Fern Valley | 2149021 | NA 71607 |
| 7 | NA 87562 | NA 87562 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 2016 | | | | | | | Cultivated material | Received with NA 83735-83773 (plants acquired for the Friendship Garden renovation), but missed during original accessioning. | 2165730 | NA 87562 |
| 8 | NA 83215 | NA 83215 | Osmunda regalis L. var. spectabilis (Willd.) A. Gray | | NA | | Not Available | 2016 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Osmunda regalis var. spectabilis. Obtained for the Friendship Garden renovation. | 2153306 | NA 83215 |
| 9 | NA 54055 | NA 54055 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 1984 | | | | | | | | | 1952062 | NA 54055 |
| 10 | NA 54863 | NA 54863 | Osmunda japonica Thunb. | Korea, South | NA | | Not Available | 1984 | COLLECTED | 08/22/1984 | North side of Changgi-ri. [Originally listed as Ch'ungch'ong Namdo, Sosan-Gun, Anmyon Island, North side of Chang Gi Ri.] | | | In shaded ravine. | Wild material | | 1950939 | NA 54863 |
| 11 | NA 43680 | NA 43680 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 1979 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmundastrum cinnamomeum. Likely collected from the wild in New England, but without any provenance data recorded. | 2145029 | NA 43680 |
| 12 | NA 43682 | NA 43682 | Osmunda regalis L. | | NA | | Not Available | 1979 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmunda regalis. Likely collected from the wild in New England, but without any provenance data recorded. | 2145031 | NA 43682 |
| 13 | NA 45021 | J-245-78 | Osmunda japonica Thunb. | Honshu, Japan | NA | | Not Available | 1978 | COLLECTED | 10/22/1978 | Tottori Prefecture: Mt. Daisen, Daisenji [temple]. | | | Near abandoned house. | Wild material | | 2158819 | NA 45021 |
| 14 | NA 40080 | C&M 97 | Osmunda japonica Thunb. | Honshu, Japan | NA | | Not Available | 1976 | COLLECTED | 10/24/1976 | Along mountain road. | | | Roadside. | Wild material | Old note: "Display label says Osmunda japonica with NA# on back (1984); no confirmation, must check in 85." Accession sheet has "Osmunda sp." written over the name. [Confirmed as O. japonica by SBL on 6/8/2023.] | 1952227 | NA 40080 |
| 15 | NA 19024 | NA 19024 | Osmunda regalis L. | | NA | | Not Available | 1962 | | | | | | | | | 1951593 | NA 19024 |
| 16 | NA 11886 | NA 11886 | Osmundastrum cinnamomeum (L.) C. Presl | | NA | | Not Available | 1958 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Osmundastrum cinnamomeum. x9/29/58 CB to FdeV Form received: division. | 2143481 | NA 11886 |