@DavidLMO, I wanted to post these pictures for you, as you helped me to identify my cactus as escobaria missouriensis. It is blooming now. I started with a very small plant, dug from my dad's yard in southeast MO. It has multiplied greatly over the years and I have given away many plants. I have it in the garden in full sun and I never do anything to it, except enjoy it!
