Below is a working checklist of Mount Desert Island's monilophytes. Please send corrections and updates to info@vfthomas.com. Photographs are welcome. Thank you.
| Family | Genus | Specific Epithet | authority | Sub-specific Epithet | authority | common name or hybrid formula | Sources (full citations given after this table) |
| Aspleniaceae | Asplenium | trichomanes | L. | ssp. trichomanes |   | maidenhair spleenwort | Greene et al. (2005) |
| Blechnaceae | Woodwardia | virginica | (L.) Smith |   |   | Virginia chain fern | Greene et al. (2005) |
| Dennstaedtiaceae | Dennstaedtia | punctilobula | (Michx.) T. Moore |   |   | hay-scented fern | Greene et al. (2005) |
| Dennstaedtiaceae | Pteridium | aquilinum | (L.) Kuhn | ssp. latiusculum | (Desv.) Hulten | northern bracken fern | Greene et al. (2005); Vining (2007) |
| Dryopteridaceae | Dryopteris | campyloptera | (Kunze) Clarkson |   |   | mountain wood fern | Greene et al. (2005); Vining (2007) |
| Dryopteridaceae | Dryopteris | carthusiana | (Vill.) H. P. Fuchs |   |   | spinulose wood fern | Greene et al. (2005) |
| Dryopteridaceae | Dryopteris | cristata | (L.) Gray |   |   | crested wood fern | Greene et al. (2005) |
| Dryopteridaceae | Dryopteris | fragrans | (L.) Schott |   |   | fragrant wood fern | Greene et al. (2005) |
| Dryopteridaceae | Dryopteris | intermedia | (Muhl. ex Willd.) Gray |   |   | evergreen wood fern | Greene et al. (2005); Vining (2007) |
| Dryopteridaceae | Dryopteris | marginalis | (L.) Gray |   |   | marginal wood fern | Greene et al. (2005); Vining (2007) |
| Dryopteridaceae | Polystichum | acrostichoides | (Michx.) Schott |   |   | Christmas fern | Greene et al. (2005); Vining (2007) |
| Equisetaceae | Equisetum | arvense | L. |   |   | field horsetail | Greene et al. (2005) |
| Equisetaceae | Equisetum | fluviatile | L. |   |   | river horsetail | Greene et al. (2005) |
| Equisetaceae | Equisetum | sylvaticum | L. |   |   | wood horsetail | Greene et al. (2005) |
| Onocleaceae | Onoclea | sensibilis | L. |   |   | sensitive fern | Greene et al. (2005); Vining (2007) |
| Ophioglossaceae | Botrychium | virginianum | (L.) Sw. |   |   | rattlesnake fern | Greene et al. (2005) |
| Ophioglossaceae | Ophioglossum | pusillum | Raf. |   |   | northern adder's-tongue fern | Greene et al. (2005) |
| Osmundaceae | Osmunda | cinnamomea | L. |   |   | cinnamon fern | Greene et al. (2005); Vining (2007) |
| Osmundaceae | Osmunda | claytoniana | L. |   |   | interrupted fern | Greene et al. (2005); Vining (2007) |
| Osmundaceae | Osmunda | regalis | L. | var. spectabilis | (Willd.) Gray | royal fern | Greene et al. (2005) |
| Polypodiaceae | Polypodium | appalachianum | Haufler & Windham |   |   | Appalachian polypody | Greene et al. (2005) |
| Polypodiaceae | Polypodium | virginianum | L. |   |   | rock polypody | Greene et al. (2005) |
| Pteridaceae | Adiantum | pedatum | L. |   |   | northern maidenhair fern | Greene et al. (2005) |
| Thelypteridaceae | Parathelypteris | noveboracensis | (L.) Ching |   |   | New York fern | Greene et al. (2005) as Thelypteris noveboracensis; Vining (2007) |
| Thelypteridaceae | Phegopteris | connectilis | (Michx.) Watt |   |   | long beech fern | Greene et al. (2005); Vining (2007) |
| Thelypteridaceae | Thelypteris | palustris | Schott | var. pubescens | (Lawson) Fern. | marsh fern | Greene et al. (2005) |
| Woodsiaceae | Athyrium | angustum | (Willd.) C. Presl. |   |   | northern lady fern | Greene et al. (2005) as Athyrium filix-femina var. angustum |
| Woodsiaceae | Cystopteris | fragilis | (L.) Bernh. |   |   | fragile fern | Greene et al. (2005) |
| Woodsiaceae | Cystopteris | tenuis | (Michx.) Desv. |   |   | Mackay's fragile fern | Greene et al. (2005) |
| Woodsiaceae | Deparia | acrostichoides | (Sw.) M. Kato |   |   | silvery spleenwort | Greene et al. (2005) |
| Woodsiaceae | Gymnocarpium | dryopteris | (L.) Newman |   |   | oak fern | Greene et al. (2005) |
| Woodsiaceae | Woodsia | ilvensis | (L.) R. Br. |   |   | rusty cliff fern | Greene et al. (2005) |