No.CultivarPod ParentPollen ParentSport MotherIn the BackgroundTOTAL OFFSPRINGSourceRegistered
1 'Sieboldiana'81231218821998Unknown--NR--
2 'Elegans'59442813911522Arends, George & The American Hosta Society.1987
3 Hosta longipes39750591170Species from Japan--NR--
4 'Tokudama'472810838923Unknown--NR--
5 Hosta sieboldii20625704755Species from Japan--NR--
6 'Tardiflora'12109665696Unknown--NR--
7 Hosta longipes lancea100683684Unknown--NR--
8 'Frances Williams'433126519619Williams, Frances & Williams, Connie.1986
9 'Beatrice'3276401446Williams, Frances--NR--
10 Hosta montana55244536399Species from Japan--NR--
11 'Aden No. 270'300335338Aden, Paul--NR--
12 'Aden No. 275'030333336Aden, Paul--NR--
13 Hosta plantaginea154615259335Species from China--NR--
14 'Tokudama Aureonebulosa'17137290327Unknown & The American Hosta Society.1987
15 'Flamboyant'3073271311Tompkins, Chet & Aden, Paul.1978
16 Hosta venusta553016171272Species from Korea--NR--
17 'Dorothy Benedict'150251461250Benedict, Dr Ralph (Herb).1983
18 Hosta hypoleuca27505151233Species from Japan--NR--
19 Hosta pycnophylla42612122227Species from Japan--NR--
20 Hosta kikutii211313189216Species from Japan--NR--
21 'High Fat Cream'464206210Shaw, Florence & Aden, Paul.1976
22 Hosta nakaiana5064142202Species from Korea--NR--
23 'Golden Waffles'780184201Shaw, Florence.1976
24 'Fascination'3452148189Shaw, Florence & Ruh, Peter.1978
25 'Bengee'100174175Harrison, Dr Jamison & Ruh, Peter.1999
26 'Sum and Substance'55106635166Shaw, Florence & Aden, Paul.1980
27 'Fortunei Hyacinthina'1135121158Hylander, Nils & The American Hosta Society.1987
28 'Fortunei'5317131156Unknown--NR--
29 'Neat Splash'6110365139Aden, Paul.1978
30 'Yellow Splash'1954111139Aden, Paul.1976
31 Hosta rupifraga158587135Species from Japan--NR--
32 'Breeder's Choice'273596131Vaughn, Kevin.1987
33 'August Moon'2244559130Langfelder, Richard & Ruh, Peter.1996
34 'Halcyon'22333936130Smith, Eric & The American Hosta Society.1988
35 'Golden Prayers'231123129Aden, Paul.1976
36 'William Lachman'592659126Vaughn, Kevin.1981
37 'Aspen Gold'1168100125Grapes, Vivian.1986
38 'Dorset Blue'1019393125Smith, Eric & Aden, Paul.1977
39 'Gold Cadet'210118121Shaw, Florence.1974
40 'Sagae'46251731119Watanabe, Kenji & Hagiwara, Eigon.1987
41 'Fortunei Gigantea'711107116Bailey, Liberty Hyde & The American Hosta Society.1987
42 Hosta fluctuans203111116Species from Japan--NR--
43 Hosta ventricosa36221839115Species from China--NR--
44 'Green Fountain'151103110Aden, Paul.1979
45 Hosta rectifolia1521675108Species from Japan--NR--

This hosta was once thought to be a species (H. fortunei) but was changed to cultivar status (H. 'Fortunei') by Schmid in 1991. There are many, many cultivars which also had their names changed from, for example, H. fortunei 'Gigantea' to H. 'Fortunei Gigantea' at that time. These plants were often used as parent plants for others which means that H. 'Fortunei' would be in the Genetic Background of all of these cultivars. There are also many hostas called 'Fortunei'-Type.

According to a presentation we heard by a former Hosta Registrar, the largest single group of hostas that have been registered would fall into the "large size, blue-green" category. When you look into their background, the most common plants you find are H. 'Sieboldiana' and H. Elegans' which were historically called the species H. sieboldiana and its cultivar H. sieboldiana 'Elegans'. In 2010, the species, H. sieboldiana was reclassified as a cultivar, H. 'Sieboldiana'...although some Hostaphiles still debate the change in status.

For decades, people have often confused these two plants whether in the garden or in the nursery trade when identifying large, blue-green hostas. We have used the statements found in various reference books, The Hosta Journal and online resources to place one or both of these plants in the background of cultivars. Several sources say that, barring some type of DNA testing, it is nearly impossible to say for sure whether H. 'Sieboldiana' or H. 'Elegans' or both are in the background of a specific hosta cultivar. However, since 'Elegans' is a sport of H. 'Sieboldiana', we must assume that H. 'Sieboldiana' is in the background of all of these plants. It is just a judgment as to whether it is the parent, grandparent or further back in the lineage.

This is a group of medium size, intensely blue-green hostas which were developed by English hybridizer, Eric Smith in the 1960s. They were the result of an unusual cross when a normally early season blooming H. sieboldiana 'Elegans' produced flowers in late summer. That allowed Smith to cross it with late season blooming H. 'Tardiflora'. Recently, what was then considered the species, H. sieboldiana has been changed to cultivar status as H. 'Sieboldiana'.

In our database, H. 'Tardiflora', 'Sieboldiana' and 'Elegans' have been included in the Genetic Background of 159 hostas which are either part of the original Tardiana Group or are noted as being a "Tardiana-Type" plant. This indicates that the person giving this designation felt that one of the original Tardianas was in a plant's genetic background.

This is another plant that was once considered a species (H. tokudama) but was changed to cultivar status (H. 'Tokudama') by Schmid in 1991. There are many cultivars which had their names changed from, for example, H. tokudama 'Aureonebulosa' to H. 'Tokudama Aureonebulosa'. These hostas were often used as parent plants for others which means that H. 'Tokudama' would be in the Genetic Background of all of these plants too.


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