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Ferns and Horsetails (Monilophytes)
Clubmosses and Quillworts (Lycophytes)
Plants of the genus Selaginella ("Spikemosses") differ from other clubmosses in being heterosporous, i.e. having spores of two kinds known as megaspores and microspores; ligules (scale-like structures) at the base of the leaves; and roots that grow from distinct leafless branches or from small swollen structures at the base the stem.

About 700 species worldwide.

One species native in Britain and Ireland, one introduced and naturalised in scattered locations.

* indicates introduced species.
Selaginella kraussiana* Mossy Clubmoss Selaginaella kraussiana thumbnail, link to S. kraussiana page
Selaginella selaginoides Lesser Clubmoss Selaginaella selaginoides thumbnail, link to S. selaginoides page
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