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Thanks for sharing. Every Cattleya jongheana alba I have ever seen starts to have the faintest hint of color as the flower senesces. It does make you think that perhaps some of the alba color forms in Cattleya are more of a gene expression problem than a non functional gene problem. Small...

1" x 1" square of older mature leaf tissue is what they ask for. I'm thinking that I will snip off the top of an older leaf that will be removed on the next repotting. Reasonable for mature Cattleyas, not so much for miniatures.

For anyone interested, I have found someone to test ploidy and genome size at pretty reasonable cost $40-50/plant for both. I've got more than a dozen different wascewiczii and dowiana clones each from different sources. This is probably sufficient to see how much variability there is genome...

Nice one!

Nice!

I'm sure Mathieu is genuinely just trying to be helpful in warning everyone, but I think this is pretty misguided. For those that are genuinely curious to think more deeply on this, are unafraid of being exposed to speculative hypotheses (that could be wrong) and are prepared to ignore his...

Just to update as requested. Since i made this post, I have started two biotech companies and these have eaten up a lot of time. That being said, I have downloaded most of the publicly available sequence data for Cattleya species genes and compared general themes that can be derived from the...

I agree with Istavan on both that it is beautiful and probably not Mendelii and think he is more of an expert than he admits. I have 8 different medelii clones from different sources and they have some commonalities that don't really fit with that image. First is just plant growth habit and...

Are you looking for a pinkish one or white?

Not all that surprising. Coerulea is due to changes in the pH of vacuoles that hold the pigments so they are more bluish than purple and semi alba is unable to make the pigments in the petals. The cross will be able to both make pigment (from the coerulea side) and have the normal vacuole pH...

The confusion stems from the fact that the natural hybrid is indeed correctly named x brasiliensis, but this is not the same taxon as Catt. bicolor ssp brasiliensis. The subspecies of bicolor are minasgeraisensis, bicolor and brasiliensis. People have suggested that the subspecies of bicolor...

Agree with Terry on this. Mossiae is quite variable from very floppy with a recurved dorsal to actually quite nice presentation as good as a nice labiata or gaskelliana. Albas are tough as the subtle differences in veining, location of coloration on the throat, etc are not present to shift ones...

Both Costa Rican dowiana and Colombian aurea are relatively warm growers. For these plants and many others, look at the elevation range to get a much better idea of the ideal temperature range. Aurea grows adjacent to warscewiczii in Colombia with a modest elevation overlap. The fact that aurea...

Mike, would love to hear both what kind of moss you are using - sphagnum or otherwise and as mentioned above, the temperatures you are keeping them at, particularly at night.

I've had some reasonable success growing them in the last few years. While everyone gets hung up on media, watering, pH and light, I really think temperature is the primary issue in why people struggle with this species. Like many mid to higher elevation plants, they would prefer day time...

It is 'Grande' x self that I got a few years ago from Orchid Inn. I have several that are in plastic pots - with growstone (an expanded recycled glass that is no longer available, but very large perlite would suffice), rock wool cubes, bark and oyster shell. Something like 35%:35%:25%:5-10%...

A few photos of a really nice kovachii that finally bloomed. 17cm

These are growing in a cool/intermediate house with a winter low of 52 and highs generally in the high 60s on the coldest winter days and mid 70s on most days. In summer, nighttime temps are high 50s to 60 and day temps are in the high 70 to mid 80s. Most of these are mounted or in wood baskets...

The jongheanas don't have much of a scent so far.

One of my favorite plants. Always a crowd pleaser.