This group includes the genera Botrychium, Botrypus, and Sceptridium, all previously within the genus Botrychium. There are 13 species and some very challenging problems in distinguishing among species. Only Botrypus virginianum is both common and conspicuous in Wisconsin. Sceptridium multifidum and S. dissectum are fairly widespread and though they may be relatively large they are often overlooked because the blades are held low and roughly parallel to the ground. Botrychium matricariifolium is fairly common, but is extremely variable in size and shape. The remaining species are all small and/or rare. It is probably an understatement to say that some individuals will be difficult to place. Refer to the treatment of Botrychium in the Flora of North America for more thorough information.