Zitrusgaertner,
That was a good catch. I hadn't really paid much attention to the petiolesbefore, but this morning I went took a gander at them. There appears to be a mixture of narrower and wider petioles:
Whether that mixture has always been true, or is just this years fashion statement is indeterminate. This year, for some reason, most of the leaves fell off; such few older leaves that remain seem to have narrower petioles. It was a mild winter.
I suspect that the ichandrinlike appearance is a bit of an illusion. My flying dragon also has relatively wide petioles:
combine that with the fact that this year the Prague Citsuma has decided to sport long narrow willow-like primary lobes gives it an Ichang-like appearance.
The Prague Citsuma is just plain weird- every year an adventure. For instance, for many years it had long wicked thorns. Then last year it apparently decided that thorns were out of style and all new growth was thornless. This year it appears that thorns are trendy again, along with willowlike leaves.
Millet, I have a rooted cutting than I stuck in the ground to see if survives our long Arctic blasts on it's own roots. Most citrus don't survive such events on their own roots when the ground freezes solid to a depth of 15 inches after two weeks when the temperature never rises above freezing. Only Poncirus Trifoliata and its twisted sister Flying Dragon survive without a foot of mulch. I'll post the outcome after the next Artic Outbreak. It has easily survived our long wet winters without apparent root rot.