The clubmosses of North American have been the subject of much study, but problems still exist in identification and interpretation. There are numerous problems of subtle species characters, hybridization, and sun vs. shade forms. This paper deals with two rare northern taxa about which there have been a number of questions. The single presumed locality for "Lycopodium sitchense" in the state of Michigan now constitutes instead the sole location for L. sabinfolium. This does not mean that L. sitchense will not be found as more knowledge is obtained concerning the flora of the Upper Peninsula. The two taxa should be sought in the northern areas of the state, especially in disturbed, acidic, sandy areas. The list of rare and endangered plants for Michigan needs to be emended to replace the name L. sitchense by L. sabinifolium. Real protection will not be achieved until the habitat of this and the other Lycopodiums at Hulbert has been set aside for management to insure their maintenance, and it may be necessary to block natural succession in order to achieve this goal.