These are the lycophytes, ferns and fern allies that are officially listed as rare by the State of Michigan. The information is taken from the Michigan Department of Natural Resources Official List of Endangered and Threatened Species Page..
True Ferns | ||
| Asplenium rhizophyllum L. | walking fern | T |
| Asplenium ruta-muraria L. | wall-rue | E |
| Asplenium scolopendrium L. var. americana (Fernald) Kartesz & Ghandi | hart's-tongue fern | E |
| Cryptogramma acrostichoides R. Br. | American rock-brake | T |
| Cystopteris tennesseensis Shaver | Tennessee bladder fern | T |
| Dennstaedtia punctilobula (Michx.) T. Moore | hay-scented fern | T |
| Dryopteris celsa (W. Palmer) Small | log fern | T |
| Gymnocarpium jessoense (Koidz.) Koidz. | northern oak fern | E |
| Gymnocarpium robertianum (Hoffman) Newman | limestone oak fern | T |
| Lygodium palmatum (Bernh.) Sw. | climbing fern | E |
| Pellaea atropurpurea (L.) Link | purple cliff brake | T |
| Woodsia alpina (Bolton) S. F. Gray | northern woodsia | E |
| Woodsia obtusa (Sprengel) Torrey | blunt0lobed woodsia | T |
| Woodwardia areolata (L.) T. Moore | netted chain fern | X |
Fern Allies | ||
| Equisetum telmateia Ehrh. | giant horsetail | X |
| Botrychium acuminatum W. H. Wagern | moonwort | E |
| Botrychium campestre W. H. Wagner | prairie moonwort / dunewort | T |
| Botrychium hesperium (Maxon & Clausen) W. H. Wagner & Lellinger | western moonwort | T |
| Botrychium mormo W. H. Wagner | goblin moonwort | T |
| Botrychium spathulatum W. H. Wagner | spatulate moonwort | T |
| Ophioglossum vulgatum L. (O. pycnostichum (Fern.) Love & Love) | southeastern adder's-tongue | E |
Lycophytes | ||
| Isoetes engelmannii A. Braun | Engelmann's quillwort | E |
| Lycopodiella margaritae J. G. Bruce, W. H. Wagner, & Beitel | clubmoss | T |
| Diphasiastrum alpinum (L.) Holub | alpine clubmoss | X |