Hey Martin,
Endresii is the only Utric species that requires a true dry dormancy. Quelchii falls more along the lines of alpina slowing growth but never actually going dormant at this time the media should be kept only moist (the "thin film" period mentioned above.)
Here is a more complete part of an email I recieved from Belanger
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Quote </td></tr><tr><td id="QUOTE"> I have found that you can't lump them together and give them the same growing conditions as they all adapted different habitat. That may be the reason that you have found such a wide array of advice for dormancy, for example. U. longifolia, U. nephrophylla can be kept warmer and wetter than the rest, while U. quelchii prefers to be cool (less than 70 and damp), and U. endressi can tolerate temps to 90 but only during dormancy when all above ground parts have died. If you are looking for cultivation information for U. endressi I refer you to an article I wrote some years ago for the CPN you can find at
http://home.earthlink.net/~dionaea/index.htm.
The only plant that requires a "true" dormancy (defined by leaves dying) is U. endressi. In fact, it requires a drying of the soil to flower. U. quelchii on the other hand slows growth significantly during warmer temps, as does U. alpina, though this is hardly discernible. I have found that those species in section Iperua don't have a dormancy. So to summarize, each species has a different requirement when it comes to growing conditions and dormancy needs. [/QUOTE]<span id='postcolor'>
As for the species I grow, the only Orchidioides I am lucky enough to have right now is alpina but I am activly searching for others and may have a line on a few.
If you know a source of any I'd love to hear from you
Pyro