I've got a plant I can't identify, which drives me nuts. I'm 99% sure it's some kind of purslane. No picture, as nothing is really growing here yet, but it will be up in a few weeks if this description doesn't get anywhere.
This is Zone 5A, Upstate NY.
The plant is almost exactly like purslane. Prostrate, really thick succulent leaves and stems. The stems are red. The plant only grows on a large, well-aged manure pile, which it covers completely. I've never found it anywhere else. Roots are fairly shallow. It has a slightly sour, "lemonade" flavor.
It's textbook purslane, sort of. But the leaf shape is very different.
It does not get any of the classic tear-drop leaves.
The leaves range from about 2 inches by 3/4 inch, but the average is more like 1 inch by 1/2 inch.
They have irregular outlines with the shape being sort of reminiscent of a holly leaf, but there are no spines at the tips, just fleshy leaf.
Goats will occasionally nibble it, but none of my livestock really goes to town on it.
Any ideas?