The Recent Genus Changes in Laeliinae Alex Maximiano, ManagingDirector, OrchidWiz, LLC
In May 2007 the RHS decided to implement the genus changes proposed in Genera Orchidacearium Vol. 4.
The changes stem primarily from DNA analyses of orchid species, which allow for more accurate classifications than those made by taxonomists
150 years ago. The changes had been in themaking for several years but are only now taking effect.
By order of greatest impact, the revisions involve
(1) the transfer of Brazilian laelias to Sophronitis,
(2) the splitting of Rhyncholaelia from Brassavola,
(3) the splitting of Guarianthe from Cattleya, and
(4) the transfer of all Schomburgkia species to either Myrmecophila or Laelia.
What do the changes mean to the average orchid grower? If you grow Cattleya-alliance hybrids,
in time you will see most of them change genus. Lets explore why.According to the new convention,
Laelia purpurata is now Sophonitis purpurata.
This means the prior hybrid Laeliocattleya [Lc.] Canha-miana (C. mossiae x L. Purpurata) becomes instead Sophrocattleya [Sc.] Canhamiana. In turn, when you cross Sc. Canhamiana with another cattleya you get an Sc. instead of an Lc.
Since Laelia purpurata has 10 generations of progeny, the number of hybrids affected is massive.
Combine that with the change of other laelias to Sophronitis: L.crispata, L. pumila, L. tenebrosa, L. cinnabarina, etc.,
and the result is thousands of new sophrocattleyas. In fact, sophrocattleyas will soon become more common than laeliocattleyas.
Among other important species affected,
Brassavola digbyana becomes Rhyncholaelia digbyana;
Cattleya aurantiaca becomes Guarianthe aurantiaca; and
Cattleya bowringiana becomes Guarianthe bowringiana.
Several new genera had to be created to accommodate these changes, of which the most important are
Rhynchosophrocattleya [Rsc.] = Cattleya xRhyncholaelia x Sophronitis
Rhyncholaeliocattleya [Rlc.] = Cattleya x Rhyncholaelia
Cattlianthe [Ctt.] = Cattleya x Guarianthe
Guarisophleya [Gsl.] = Cattleya x Guarianthe x Sophronitis
Thwaitesara [Thw.] = Cattleya x Guarianthe x Rhyncholaelia x Sophronitis
For example, the following popular hybrids have changed names:
Blc. Goldenzelle in now Rhynchosophrocattleya [Rsc.] Goldenzelle
Slc. Hazel Boyd is now Guarisophleya [Gsl.] Hazel Boyd
C. Chocolate Drop is now Cattlianthe [Ctt.] Chocolate Drop
Slc. Jewel Box is now Guarisophleya [Gsl.] Jewel Box
Bc. Mount Anderson is now Rhyncholaeliocattleya [Rlc.] Mount Anderson
Blc. Momilani Rainbow is now Thwaitesara [Thw.] Momilani Rainbow
OrchidWiz has incorporated these changes into its database and the new names are available starting with Encyclopedia version4.01.OrchidWiz allows users to search by either the new name or the old name
In addition, if the genus change was recent, the program will detail the prior name.
The name changes will be frustrating in the beginning but in time they will allow us a greater understanding of Laeliinae hybrids.
For example, hybrids built on Brassavola species such as nodosa behave differently than those built on Rhyncholaelia species
such as digby-ana. If we can tell which ones are which by the genus name then we should be able to understand them better.
Dear members and friends, The RHS is at it again. This article by Alex Maximaino will help you with the orchid name changes
Good luck with the confusion.Can you name any of these orchids now?
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AOS name for cattleya.txt
