selaginella selaginoides, called prickly mountain moss or lesser clubmoss

biodiversity europe finland lycopodiophyta lycopodiopsida northern hemisphere scandinavian selaginella selaginoides selaginellaceae selaginellales biology botany cones delicate ecology flora green habitat destruction lesser clubmoss ligule low spikemoss nature north perennial plant plants prickly mountain moss propagation rare small sporangia spores threatened vascular vegetation