No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
1
| 'Hime Urajiro Hyaga' | Miniature | Med-Green | | | Sport | Near-White | August to September | Unknown | --NR-- |
2
| 'Hosoba Urajiro' | Unknown | Unknown | | | Unknown | Unknown | Unknown | Unknown | --NR-- |
3
| Hosta urajiro itaya | | | | | Duplicate | | | Duplicate Name | |
4
| 'Hyuga Urajiro' | | - | | | Duplicate | - | | Duplicate Name | |
5
| 'Iwa Urajiro Daifukurin' | Large | Med-Green | Marginal | Yellow | Sport | Unknown | Unknown | Unknown | --NR-- |
6
| 'Kifukurin Urajiro Hyuga' | Medium | Med-Green | Marginal | Yellow | Sport | Near-White | Unknown | Unknown | --NR-- |
7
| 'Kishimafu Urajiro Saigoku Iwa Giboshi' | Medium | Med-Green | Streaked | Yellow | Unknown | Unknown | Unknown | Unknown | --NR-- |
8
| 'Ko Urajiro' | Unknown | Blue/Green | | | Unknown | Unknown | Unknown | Unknown | --NR-- |
9
| 'Murasaki Kuki Urajiro' | Medium | Med-Green | | | Hybrid | Med-Lavender | Unknown | Unknown | --NR-- |
10
| 'Ogon Ko Urajiro' | Unknown | Yellow | | | Hybrid | Unknown | Unknown | Watanabe, Kenji | --NR-- |
11
| 'Ogon Urajiro' | Medium | Yellow | | | Unknown | Unknown | Unknown | Unknown | --NR-- |
12
| 'Shirobana Urajiro' | Unknown | Med-Green | | | Hybrid | Near-White | Unknown | Unknown | --NR-- |
13
| 'Shirofukurin Urajiro Iwa' | Small | Med-Green | Marginal | White | Sport | Unknown | Unknown | Unknown | --NR-- |
14
| 'Urajiro Amagi Iwa' | Medium | Dark-Green | | | Sport | Unknown | September | Unknown & Walek, Kevin & The American Hosta Society | .2009 |
15
| 'Urajiro Gibōshi' | | - | | | Duplicate | - | | Duplicate Name | |
16
| 'Urajiro Hachijo', H. longipes | | | | | Duplicate | | | Duplicate Name | |
17
| 'Urajiro Hachijo', H. rupifraga | Medium | Med-Green | | | Sport | Light-Purple | September | Unknown | --NR-- |
18
| 'Urajiro Hyuga Gibōshi' | | - | | | Duplicate | - | | Duplicate Name | |
19
| 'Urajiro Itaya' | Medium | Dark-Green | Streaked | Yellow | Unknown | Med-Lavender | June to July | Maillot, Guy | --NR-- |
20
| 'Urajiro Iwa' | Medium | Med-Green | | | Sport | Light-Purple | September | Unknown | --NR-- |
21
| 'Urajiro Izu Iwa' | Small | Dark-Green | | | Sport | Med-Lavender | August to September | Unknown & Walek, Kevin & The American Hosta Society | .2009 |
22
| 'Urajiro Ko Iwa' | Miniature | Med-Green | | | Hybrid | Unknown | Unknown | Watanabe, Kenji | --NR-- |
23
| 'Urajiro Musashino' | Small | Med-Green | | | Sport | Light-Purple | August to September | Unknown | --NR-- |
24
| 'Urajiro Oba' | Large | Med-Green | | | Sport | Unknown | Unknown | Unknown | --NR-- |
25
| 'Urajiro Sudare' | Large | Dark-Green | | | Unknown | Unknown | Unknown | Unknown | --NR-- |
26
| 'Urajiro Ubatake' | Small | Med-Green | | | Sport | Light-Purple | July | Watanabe, Kenji | --NR-- |
27
| 'Urajiro', H. clavata | | - | | | Duplicate | - | | Duplicate Name | |
28
| 'Urajiro', H. longipes | | - | | | Duplicate | - | | Duplicate Name | |
29
| 'Urajiro', H. montana | | - | | | Duplicate | - | | Duplicate Name | |
30
| 'Urajiro', H. pulchella | | - | | | Duplicate | - | | Duplicate Name | |
31
| 'Urajiro', H. rupifraga | Small | Med-Green | | | Sport | Deep-Purple | Unknown | Nigishi | --NR-- |
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