These caudiciform shrubs can get up to 7 feet tall! I’m skeptical. But they do get yellow flowers all year round. And they’re easy to take care of, because if the leaves start wilting, well then it’s time to water, and the leaf pops back up and is the picture of health. In other words, it’s one of the easy plants that form a caudex.
Also notice how the bloom is actually quite long and tubular, with only the leading edge of the petals wide open.