Flower From My Garden Room

I cannot identify this flower as of now but will look it up for future reference. I have taken so many of my plants into my garden room for the winter. This morning I decided to use my 105mm micro lens and found this beautiful flower just waiting for me. It is approximately 2/8" in diameter. Later, I decided to take a count of our endangered Pineapple Cactus. I walked for approximately 2 hours and found only 10 of these cactus on my property. Seems like the cold weather in February was very hard on them. I have 5 acres and lots of cactus but the Pineapple Cactus are special.