[ID: Five photos showing the different features of a creeping cucumber plant, with a white hand for scale.
The plant is growing as a thin vine, with small leaves shaped like hearts that have had two triangles cut out of the bottom, giving it three points. The leaves are about half the length of the person’s finger, and have many small, white spots on them that blend in.
The plant has small very small flowers, solid yellow, with five petals shaped like pentagons, and slightly larger fruit, about the size of the person’s fingertip, light green with lighter spots, shaped like a tiny watermelon. Some are newly formed, and are smaller and skinnier, with dried flowers still hanging from the ends.
End ID.]
Link to observation
The unripe fuits can be eaten raw or cooked.
The ripened, purple or black fruits should be avoided, because they are apparently very strong laxatives. You can collect those to save seeds from, but don’t eat them.
I tried one of the light green fruits on here, and it tasted like a cucumber, but slightly more sour.