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Cattleya expanded

This is a discussion on Cattleya expanded within the Genus Specific forums, part of the Orchid Culture category; Here we go again. I have said that name changes were coming down the line ...

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  1. #1
    Ron-NY is offline rothaholic
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    Default Cattleya expanded

    Here we go again. I have said that name changes were coming down the line and therefore I was refusing to make any tag changes. I am still not going to change a thing for I am sure this will not be the final change.

    Forthcoming
    Name Changes

    In 2000 the first DNA study of the Laeliinae was reported in Lindleyana. One of the results of that study was the realization that the Brazilian laelias did not belong with the Mexican group of species that included the type for that genus (Laelia anceps). The initial solution was to place them in Sophronitis although other authors proposed to split these species into several segregate genera. With the publication of Genera Orchidacearum Vol 4 in 2006 and the acceptance of the circumscriptions therein, a plethora of name changes took place in artificial hybrid names in this alliance. While many familiar names changed, the situation would have been significantly worse had this group of species been carved into a number of smaller genera.

    Recent DNA studies with nine plastid regions plus the original ITS dataset have lead to a better understanding of this group. While this expanded Sophronitis is always supported, it is also imbedded among species traditionally recognized as Cattleya presenting the need to further alter the definitions of the genera that make up the alliance. There are effectively two solutions; creation of new genera for the various subgroups of Cattleya or lump all Sophronitis species with Cattleya and deal with these groupings as subgenera or sections of a greatly expanded Cattleya. This latter solution provides better nomenclatural stability for artificial hybrids of species in this alliance since changes would not result in transfers to new genera.

    At the World Orchid Conference in January 2008, International Orchid Committee met to discuss the situation and, with input from the RHS Advisory Panel on Orchid Hybrid Registration (APOHR), the authors of the additional studies, the Orchid Hybrid Registrar (the Registrar), the AOS and editors of Genera Orchidacearum agreed that sinking Sophronitis into Cattleya would be a better approach over the long term.

    Where are we? The first step in the process was the publication of a scientific paper transferring these species comprising the expanded Sophronitis into Cattleya. That was done in March of 2008 in Biodiversity. Those that don't appear in this paper are those that, at one time or another, were already transferred by other authors. Sophronitis (Laelia) tenebrosa is an example. The second step, transfer of the natural hybrids has also now been done as well.

    In a few months Genera Orchidacearum Vol. 5 will be published and will contain an addendum accepting these changes and the World Checklist of Monocotyledons will then be updated to reflect the changes. The Registrar has prepared the transfer of those species that appear in the hybrid registration database as well as the changes to intergeneric names that will result.

    The cute little Laelia liliputana (aka Hoffmannseggella, Sophronits) will soon be known as Cattleya liliputana.

    While these changes will take some getting used to, this will stabilize hybrid names in the long run. The most visible of the ensuing name changes will be the sinking of the vast majority of Laeliocattleya, Sophrocattleya, and Sophrolaeliocattleya into Cattleya. This and the transfer of most of the existing Brassocattleya, Brassolaelia, Brassolaeliocattleya and Rhynchosophrocattleya hybrids to Rhyncholaeliocattleya (Rhyncholaelia x Cattleya) will involve some 75-80% or more of the hybrid name changes. There will be some Laeliocattleya that remain so along with some Brassocattleya and Brassolaelia that will remain unchanged or become Brassocattleya; those with one of the Mexican Laelia species like L. anceps or L. autumnalis or a true Brassavola like B. nodosa in the background respectively, but these will definitely be in the minority. An example of one of the former is Bc. Katherine H. Chatham (B. nodosa x C. labiata) which will remain unchanged and an example of the latter is Bl. Richard Mueller which will become Bc. Richard Mueller (B. nododa x C. flava) It is our understanding that the Registrar expects the database to be updated by the end of March.

    Further Reading:

    * Sophronitis to Cattleya transfers in grex register, OHR(PDF, 77kb)
    * New Combinations in the Genus Cattleya Lindl. (Orchidaceae);
    C. Van Den Berg (PDF, 335kb)



    Ron McHatton – AOS Director of Education

  2. #2
    Ron-NY is offline rothaholic
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    I suspect that once this is done things will be argued for years, between taxonomists/botanists and horticulturalists. Then, if left in Cattleya will have to broken into subgenera.

  3. #3
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    Brutal_Dreamer is offline Dreaming with my eyes open...
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    Quote Originally Posted by Ron-NY View Post
    I suspect that once this is done things will be argued for years, between taxonomists/botanists and horticulturalists. Then, if left in Cattleya will have to broken into subgenera.
    Wow. This is going to be really confusing....

    Thanks for the information, Ron!

    Cheers,
    BD

  4. #4
    Ron-NY is offline rothaholic
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    Bruce it was difficult when they moved most of the Laelias to Sophronitis. I knew that wouldn't stand so I did not make any changes in my database, of my collection. Now they are being moved again. Personally, I will again not make any changes for I am not sure they will stay in Cattleya or not.

  5. #5
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    Hillbilly Bob is offline Senior Member
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    I'm staying Pat I got trouble with all the names now. Maybe I'll just Hey you Orchid Nice Bloom

  6. #6
    smwboxer is offline Senior Member
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    Kinda makes me glad I don't grow any of these!

  7. #7
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    wetfeet101b is offline It's not dead! It's just permanently dormant.
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    Here we go again!

    I rarely re-tag my orchids now.
    If someone is not happy with the "old" names on my collection then they are more than welcome to re-tag my plants
    I'll buy them lunch too.

  8. #8
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    smartie2000 is offline Senior Member
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    ....I didn't bother learning their name changes , but once it is finalized then I'll learn them

  9. #9
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    I'm also glad that the majority of my orchids are Paphs

    frankly, I reckon they should go one step further and sink all the plants that will breed together in one genera! that will reduce again the number of generas we have to learn about.. woo hoo

    forgot to say, thank you Ron, for this information.

  10. #10
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    I'm happy my collection doesn't include Catts myself, its going to be a problem recognising names during judging though. I believe the private and commercial growers and the major orchid bodies in all countries, like the AOS, AOC, SAOC etc should tell these geniuses to take a flying leap and leave things as they were. These names have been used for more than two centuries, why now get round to messing with them.

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