There are plenty of small yellow flowers about the size of a quarter coin that superficially look like this one. What caught my attention was the multiples of threes in the petals, stamens, and pistils. Add in the grass-like leaves, and my first thought was it looked like a yellow version of blue-eyed grass. It was a good guess as they're both in the same genus Sisyrinchium. One by one, I'm slowly adding new flowers to my repertoire of those that I recognize. I liken it to learning new vocabulary words in a foreign language.