| 0 | WLP 1246 | NA 80093 | Hydrangea serrata (Thunb.) Ser. var. serrata | | NA | | | 2005 | COLLECTED | | Jeollanam-do: Suncheon-si: Seo-myeon, Jibon-ri, Geumpyeong Jo Bon Resort. Cheongso-gil, Wild flower farm. [Originally listed as Chonnam Province, Soon Cheon City, Seo Myum, Ji Bon Ri, Geum Pyung Jo Bon Resort. Chung So Gol, Wild flower farm | | | | Uncertain improvement status | | 1899520 | WLP 1246 |
| 1 | PI 479422 NA 51310 | JH-291-82 | Hydrangea sp. | Hokkaidô, Japan | NA | | | 1982 | COLLECTED | 10/06/1982 | Hokkaido Prefecture, Oshima Subprefecture, Kayabe-gun: Mori-machi: Akaigawa, Mori National Forest. | 42.00000000, 140.65000000 | 390 | | Wild material | Material is probably referable to H. serrata var. yesoensis (Koidz.) H. Ohba [=H. yesoensis Koidz.]. | 1374358 | PI 479422 NA 51310 |
| 2 | PI 479424 NA 51325 | JH-304-82 | Hydrangea sp. | Honshu, Japan | NA | | | 1982 | COLLECTED | 10/08/1982 | Aomori Prefecture: Towada-shi: Tsutanuma (pond), Mt. Hakkoda area, Towada-Hachimantai National Park. | 40.55000000, 140.96666667 | | Growing by edge of stream under shade in woodland. | Wild material | Material is probably referable to H. serrata var. yesoensis (Koidz.) H. Ohba [=H. yesoensis Koidz.]. | 1374360 | PI 479424 NA 51325 |
| 3 | PI 479425 NA 51354 | JH-334-82 | Hydrangea sp. | Honshu, Japan | NA | | | 1982 | COLLECTED | 10/09/1982 | Aomori Prefecture: Towada-shi: Yunotai. | 40.61666667, 140.96666667 | | Growing in an open field. | Wild material | Material is probably referable to H. serrata var. yesoensis (Koidz.) H. Ohba [=H. yesoensis Koidz.]. | 1374361 | PI 479425 NA 51354 |
| 4 | NA 78352 | BCJMMT 116 | Hydrangea sp. | Honshu, Japan | NA | | | 2009 | COLLECTED | 07/01/2007 | Niigata Prefecture: Yuzawa-machi: Mt Tairappyo, Mikuni, Yuzawa. [Originally listed as: Mt Matsude, Hiuchi, Yuzawa Town; locality name updated based on GPS coordinates.] | 36.81280000, 138.79733000 | 1170 | In deep shade on moist medium loam on a steep northwest-facing mountainside of dense broadleaf woodland. | Wild material | Received as Hydrangea serrata var. megacarpa. Initially thought three plants were received, but WLPGR had two additional plants (total now 5). Identity needs to be confirmed; if this adheres to its original identification, then it may be H. yesoensis/H. cuspidata (allied closely to H. macrophylla) rather than H. serrata. -SBL | 1898062 | NA 78352 |
| 5 | WLP 1232 | NEKG 195 | Hydrangea petiolaris Siebold & Zucc. | Gyeongsangbuk-do, Korea, South | NA | | | 1989 | COLLECTED | 10/19/1989 | Ulleungdo (Ullung Island): Ulleung-gun, Ulleung-eup: Ridge east of Dodong-ri. [Originally listed as Kyong-sang Pukto, Ullung Do. Ridge e. of Todong.] | 37.03333333, 130.91388889 | 100 | Growing on rocks and shrubs. | Wild material | | 1498971 | WLP 1232 |
| 6 | NA 60685 | NA 60685 | Hydrangea aspera Buch.-Ham. ex D. Don | Anhui Sheng, China | NA | | | 1988 | COLLECTED | 10/07/1988 | Huangshan Mountains: Shi Ba Han Lo (18 Curve Pathway), Bei Hai (North Sea). | 32.15702100, 117.31498700 | 1203 | Along pathway, east facing slope, full sun. | Wild material | | 1111843 | NA 60685 |
| 7 | WLP 3428 | HOKY23-18 | Zelkova serrata (Thunb.) Makino | Honshu, Japan | NA | | | 2024 | COLLECTED | 09/27/2023 | Tochigi Prefecture: Shoya-shi: Funyu Utsunomiya University Forest. | 36.78605000, 139.81971670 | 457 | Patch of deciduous forest among Cryptomeria and hinoki cypress plots, above narrow road. Growing in 1/2 to 3/4 shade. Soil: Gritty, rocky with organic layer atop. Slope: 45°. Aspect: Southwest. Elevation: 1500 feet. | Wild material | | 2165766 | WLP 3428 |
| 8 | WLP 3416 | HOKY23-10 | Acer capillipes Maxim. | Honshu, Japan | NA | | | 2024 | COLLECTED | 09/20/2023 | Yamanashi Prefecture: Itoshirogawa Valley. | 35.74000000, 138.32763330 | 1151 | Rocky scree, below large waterfall (Shojigataki). Growing in open to quarter-shade. Soil: Boulders, sand, river outwash. Slope: 45°. Aspect: South. Elevation: 3778 feet. | Wild material | | 2165754 | WLP 3416 |
| 9 | NA 86846 | MSD19-001 | Acer pycnanthum K. Koch | Honshu, Japan | NA | | | 2021 | COLLECTED | 05/23/2019 | Gifu Prefecture: Nakatsugawa: farm of Mr. Asano. | 35.49533000, 137.45438000 | 270 | Mesic woods adjacent rice paddies; much of overstory was Cryptomeria (planted); poor drainage throughout; most trees growing at edges where light was abundant. Soil highly organic and shallow. | Wild material | Full name as recorded at U.S. National Arboretum: Acer pycnanthum. Plants picked up by USNA staff on 6/23/2021. | 2154981 | NA 86846 |
| 10 | NA 86852 | PCC18-HON-052 | Daphniphyllum macropodum Miq. | Honshu, Japan | NA | | | 2021 | COLLECTED | 09/20/2018 | Wakayama Prefecture: Wakayama Experimental Forest, Hirai (Hokkaido University Forest). [Note: latitude/longitude 33 deg. 39.710' N, 135 deg. 40.030' E were previously provided for this collection; coordinates entered in GRIN differ and have been used here instead.] | 33.65232800, 135.66941100 | 263 | Mixed broadleaved evergreen, deciduous and coniferous forest; north-running stream valley. Soil thin, rocky with organic matter. Slope: 30 degrees. Aspect: Northeast. | Wild material | Full name as recorded at U.S. National Arboretum: Daphniphyllum macropodum. See NA 86524 for seed from the original wild collection that was received previously. The individual originally recorded as NA 86852-J (now NA 87856-H) has completely green, rather than reddish, petioles, conforming to what was once recognized as D. macropodum f. viridipes (Nakai) Ohwi; this name is not recognized as taxonomically relevant but may be of horticultural interest to recognize as as Viridipes Group. Its siblings from the same collection, NA 86852-H and NA 86524-H, both have reddish petioles. | 2154987 | NA 86852 |
| 11 | NA 87856 | Viridipes Group | Daphniphyllum macropodum Miq. | Honshu, Japan | NA | | | 2021 | DONATED | 09/20/2018 | Wakayama Prefecture: Wakayama Experimental Forest, Hirai (Hokkaido University Forest). [Note: latitude/longitude 33 deg. 39.710' N, 135 deg. 40.030' E were previously provided for this collection; coordinates entered in GRIN differ and have been used here instead.] | 33.65232800, 135.66941100 | 263 | Mixed broadleaved evergreen, deciduous and coniferous forest; north-running stream valley. Soil thin, rocky with organic matter. Slope: 30 degrees. Aspect: Northeast. | Wild material | Full name as recorded at U.S. National Arboretum: Daphniphyllum macropodum Viridipes Group. Plant picked up by USNA staff on 6/23/2021; originally recorded as NA 86852-J, but reaccessioned due to differing morphology (green petioles and strongly glaucous leaf undersides) that resulted in a name variance. From the record of the parent accession, NA 86852: See NA 86524 for seed from the original wild collection that was received previously. The individual originally recorded as NA 86852-J (now NA 87856-H) has completely green, rather than reddish, petioles, conforming to what was once recognized as D. macropodum f. viridipes (Nakai) Ohwi; this name is not recognized as taxonomically relevant but may be of horticultural interest to recognize as as Viridipes Group. Its siblings from the same collection, NA 86852-H and NA 86524-H, both have reddish petioles. | 2170512 | NA 87856 |
| 12 | NA 86524 | PCC18-HON-052 | Daphniphyllum macropodum Miq. | Honshu, Japan | NA | | | 2020 | COLLECTED | 09/20/2018 | Wakayama Prefecture: Wakayama Experimental Forest, Hirai (Hokkaido University Forest). [Note: latitude/longitude 33 deg. 39.710' N, 135 deg. 40.030' E were previously provided for this collection; coordinates entered in GRIN differ and have been used here instead.] | 33.65232800, 135.66941100 | 263 | Mixed broadleaved evergreen, deciduous and coniferous forest; north-running stream valley. Soil thin, rocky with organic matter. Slope: 30 degrees. Aspect: Northeast. | Wild material | See NA 86852 for additional plants of this wild collection received in 2021 from Morris Arboretum. | 2116467 | NA 86524 |
| 13 | WLP 1540 | PCC18-HON-040 | Pieris japonica (Thunb.) D. Don ex G. Don | Honshu, Japan | NA | | | 2018 | COLLECTED | 09/18/2018 | Saitama Prefecture, Chichibu City; ; Otaki; University of Tokyo Forestry Department Research Station. | 35.93978000, 138.82176000 | 881 | Mesic mixed deciduous-coniferous forest; roadside edge; broad northeast-running valley. Soil rich, organic. | | Seed collected from three plants; three herbarium vouchers with flowers [buds?] and fruits collected; photographed. | 2108933 | WLP 1540 |
| 14 | WLP 1877 | PCC18-HON-058 | Trochodendron aralioides Siebold & Zucc. | Honshu, Japan | NA | | | 2018 | COLLECTED | 09/21/2018 | Wakayama Prefecture, Higashimuro-gun; Kozagawa-cho; Wakayama Experimental Forest, Hirai (Hokkaido University Forest). | 33.66473000, 135.66700000 | 263 | Mixed broadleaved evergreen, deciduous and coniferous forest; north-running stream valley. Soil rocky. | | Seed collected from one plant; three herbarium vouchers collected; photographed. | 2108940 | WLP 1877 |
| 15 | NA 61795 | NA 61795 | Euonymus japonicus Thunb. | Gyeongsangbuk-do, Korea, South | NA | | | 1989 | COLLECTED | 10/19/1989 | Ullung Do; Ridge E of Todong | 37.48344000, 130.91548200 | 100 | Growing with Zelkova serrata, Hydrangea petiolaris, Elaeagnus macrophylla. | Wild material | | 1498957 | NA 61795 |