Out of bloom, most commercially available Schlumbergeras look more or less identical.
Approximately rectangular, with a deeply serrated margin. We've all seen it.
(The above photo isn't of my seedlings, but it may as well be; that's what their parents looked like, and that's what they look like too.)
So I was curious about what the seedlings from Schlumbergera x buckleyi were going to look like, since buckleyi has several traits that distinguish it from the others: the notches in the stem segments are very shallow, the margin between the notches are rounded rather than coming to a sharp point, the overall segment shape is narrower (sometimes with a triangular base), and the habit of the plant overall is much less upright than the S. truncata hybrids.
This photo was originally taken to highlight the shape of S. x buckleyi fruits, but it works well enough to show segment shape. For what it may be worth to you, perfectly round, smooth fruit is more the exception than the rule, and a number of my seedlings can make "ribbed" fruits like this, though most of the seedlings that do this make 'em round sometimes and ribbed other times. As far as I've seen, buckleyi fruits are always ribbed.
The 28
buckleyi seedlings I started in March 2015 are now producing mature new growth, and it's pretty easy to tell the difference between a group of them and a group of other seedlings of different age, though some of the
buckleyi seedlings overlap the others enough in appearance that I don't know that I could accurately pick out the 10
buckleyi seedlings in a group of 30 seedlings.
Top row, L-R: 261, 263, 270
Second row: 273, 274, 275
Bottom row: 260, 268, 276, 277
(It may help to view the photo full-size.)
As you can see from the picture, they're all making attempts at marginal serrations, similar to x
buckleyi, though the shapes vary. 274, 260, and 268 have scalloped (
crenate) edges, that make the segments look something like a
child's drawing of a cloud; most of the others are half-assing it, putting occasional slight waves in the margin without a sharp indentation. They also mostly take after x
buckleyi in having longer, narrower segments than usual.
I haven't investigated whether the drooping habit is inherited or not; most of them are still small enough that they'd be upright even if genetically programmed to droop.
Buckleyi's bloom
color is nice --
-- and I will be excited to see whether it transfers to any of the offspring, but they'll have to bud up first, and there's a substantial obstacle in the way of that happening.
Buckleyi is exceptionally picky about having long, perfectly dark nights, and will not set buds otherwise. In some years, I've gotten no blooms at all from my two
buckleyi plants; last year I got maybe ten flowers overall, mostly in the spring,
1 and I had to put the flat on a low shelf in the plant room, remove an artificial light from a couple shelves above, and pile up a bunch of plants in front of the
buckleyi to block the light, in order to get even
that many.
So far, only three of the
buckleyi seedlings have moved into the plant room (#s 256, 271, and 272), and none have tried to bud yet. This doesn't necessarily mean that they're going to be fussy about dark nights too -- only about a third of the seedlings capable of producing a new first bud have done so,
2, 3 and it's still very early in the season -- but it's not an encouraging sign, either.
In any case. I don't necessarily
like the stem segment shapes from this group of seedlings (though 268, one of the "cloud" ones, is intriguing), but they're distinctive enough that I'll probably be able to tell if x
buckleyi was the pollen parent for any of the future batches of seedlings. Which will be nice.
I'm thinking about trying to make deliberate crosses this year, if I can figure out how to identify which are which: I have so many random crosses from last year that I don't even have space to start all of the seeds, much less enough space to pot up all the seedlings that result,
4 so I either have to switch to specific, deliberate crosses, or convince the husband to add a second basement.
Finally, I wanted to share this picture of seedling 354, because I was impressed with how much branching it thinks it's going to be doing:
354 is a second-generation seedling (seed parent: 082A Strawberry Madeleine), and the photo was taken when it was about two weeks shy of being a year old.
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