| 1991 : Moriya, Iabaraki | ||||
| TWTwNo | Family | Scientific Name | ||
| 2849 | Rosaceae | Prunus mume (Sieb.) Sieb. et Zucc. | ||
| donated from the Ibaraki Nature Musem. 19 Dec. 2003 | ||||
| Iwai City, Ibaraki Pref. | ||||
| 20788 | Cercidiphyllaceae | Cercidiphyllum japonicum Sieb. et Zucc. | ||
| 20794 | Salicaceae | Salix gilgiana Seemen | ||
| 20798 | Verbenaceae | Clerodendrum trichotomum Thunb. | ||
| 20803 | Ulmaceae | Zelkova serrata (Thunb.) Makino | ||
| 20829 | Salicaceae | Salix subfragilis Andersson | ||
| 20871 | Salicaceae | Salix chaenomeloides Kimura | ||
| donated from the Ibaraki Nature Musem. 19 Dec. 2003 | ||||
| Sakai Machi Irabaki Pref. | ||||
| 20879 | Aceraceae | Acer nikoense Maxim. | ||