The lush, green mosses that most people associate with wooded areas belong to the dominant gametophyte moss generation. These plants germinate from haploid moss spores that come into contact with incident light. Developing filaments of haploid cells known as protonemata sprout from the walls of the spores in proper conditions and resemble the appearance of filamentous algae. From the tangle of branching protonemata filaments, small, brown bulbs called bulbils may develop. Bud-like, the aerial bulbils develop into typical moss gametophytes when they arrive at a suitable location.