Selaginella selaginoides; The Lesser Clubmoss is a common small plant on Iceland's dry heathers, scrublands and grasslands. It is a rather small clubmoss (about 8 cm tall) that doesn't form longer prostrate stems. Characteristic are the teeth on the sporophyll leaves. The leaves are about 3mm long. The sporangia are placed in the upper part of fertile shoots. There are two types of sporangia: on top are yellow sporangia containing yellow microspores. Microspores germinate into prothallia with male-reproduction organs. Below are green-colored sporangia which contain macrospores. The macrospores germinate into prothallia which produce female-reproduction organs.
Although it is in name a clubmoss, Selaginella's are included in a very different group of the Lycopod class. It is family of the Selaginaceae, the spikemoss family.
On Iceland it is known as Mosajafni.