| Family | Agavaceae (also placed in Liliaceae) |
| Scientific name | Hosta kiyosumiensis F. Maekawa |
| Synonyms | Hosta densa F. Maekawa; Hosta kiyosumiensis F. Maekawa var. petrophila F. Maekawa; Hosta praecox F. Maekawa; Hosta sacra F. Maekawa; Hosta takahasii Araki |
| Common name | (Japanese common name) kiyozumi-giboushi (キヨズミギボウシ, 清澄擬宝珠 [meaning: Mt. Kiyozumi giboushi (giboushi = a traditional metal ornament of bridges)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu |
| (Other nations) none | |
| Habitat | Wet rocks in mountains |
| Chromosomal number | 2n=60 |
| Description | Leaves 10-15cm long, 5-7.5cm wide. Scapes 30-65cm tall. Flowers white or pale blue corollas 4-5cm long, flowering in June to July. Perennial plants. |
| Reference | H. kiyosumiensis F. Maekawa 1935 [PDF] |
| Note | Reratively rare. |
| July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
| July 2007 at Tsukuba Botanical Garden |
| December 2007 at Tsukuba Botanical Garden |
December 2007 at Tsukuba Botanical Garden |
December 2007 at Tsukuba Botanical Garden |