#soursob

AKA African wood-sorrel, Bermuda buttercup, Bermuda sorrel, buttercup oxalis, Cape sorrel, English weed, goat's-foot, sourgrass, or soursop.

Another weed from southern Africa, and much harder to eradicate than the previous examples, thanks to the bulbs it forms underground (very unusual for dicots). It's also potentially poisonous, thanks to the calcium oxalate content. Despite that, it is sometimes eaten after boiling. Which does livestock no good at all, especially in Australia and anywhere else it can become the dominant plant in pasture.