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a small portion of the family, are treated here in Selaginella, pending a full revision of the family worldwide. Species in the fossil genus Selaginellites

known from the Flora region. The traditional treatment is adopted here, pending corroboration from a wider range of data, both molecular and morphological

Link by H. K. Svenson (1957). Pending a much-needed worldwide revision, the treatment herein is based on the partial revision for North America by S. G. Smith

are still lacking for many other groups, and these are retained in Sedum pending further study. R. T. Clausen (1975) provided the most comprehensive treatment

Leskeella and Pseudoleskeella. However, Leskeella is here retained pending a worldwide revision that includes all other species of the genus as well as those

Hultén 1968 for Alaska; Tang T. and Wang F. T. 1961, for China). Pending a taxonomic revision, the following five names, all from eastern Asia, should probably

is very variable, recognition of varieties is premature pending a worldwide taxonomic revision of subg. Scirpidium. Much of the variation is apparently

palustris in the genus Dicranella is retained here pending further study. Frahm, J.-P. et al. 1998. Revision der Gattung Dichodontium (Musci, Dicranaceae).

Recognition of infraspecific taxa within E. quinqueflora is premature pending a worldwide revision of subg. Zinserlingia. It has been reported from North Dakota

coastal species. It is tentatively accorded species rank pending a comprehensive, worldwide revision of the complex even though, in other regions, apparently

particular remains poorly known, with more taxa likely to be recognized pending further study. The disposition of some infraspecific names is currently

The arrangement adopted here is a compromise for North American genera, pending a thorough analysis of the family worldwide. The taxodioid genera are placed