| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Rainbow' | Large | Dark-Green | Marginal | Yellow | Sport | Pale-Lavender | July into August | Unknown | --NR-- |
|
2
| 'Richmond Blue' | Large | Blue/Green | | - | TC Sport | Near-White | June into July | Zumbar, Wm & Walek, Kevin & The American Hosta Society | .2009 |
|
3
| 'Robyn's Choice' | Medium | Blue/Green | Marginal | Yellow | Sport | Med-Lavender | July into August | Thomas, Bryan | --NR-- |
|
4
| 'Rosedale Barnie' | Medium | Dark-Green | | - | Hybrid | Light-Purple | July | Hadrava, Jerry | .1999 |
|
5
| 'Rosedale Mama Le Pew' | Medium | Med-Green | | - | Unknown | Light-Purple | - | Hadrava, Jerry | --NR-- |
|
6
| 'Royal Mouse Ears' | Small | Blue/Green | Streaked | White | TC Sport | Light-Purple | July | Deckert, Emile & Deckert, Jane | .2004 |
|
7
| 'Roy's Pink' | Small | Med-Green | | - | Hybrid | Light-Purple | August | Benedict, Dr Ralph (Herb) & Walek, Kevin & The American Hosta Society | .2009 |
|
8
| 'Ruffled Green Mouse' | Miniature | Dark-Green | | | Nat-Sport | Light-Purple | July | Van den Top, Jan | --NR-- |
|
9
| 'Ruffled Green Mouse Ears' | Small | Dark-Green | | | Unknown | Light-Purple | July | Van den Top, Jan | --NR-- |
|
10
| 'Ruffled Pole Mouse' | Miniature | Med-Green | Medial | White | Sport | Light-Purple | July | Van den Top, Jan | --NR-- |
|