"See this growth in my cacti soil? What is it? Each one is about a centimeter tall but they don’t have deep roots and they’re conical in shape at the top."
A: "They’re called Cup Fungi: The Pezizaceae (commonly referred to as cup fungi) and they’re a family of fungi in the Ascomycota which produce mushrooms that tend to grow in the shape of a ‘cup.’ Spores are formed on the inner surface of the fruit body (mushroom). The cup shape typically serves as a way to form raindrops into splashing spores out of the cup."