Below is a working checklist of Mount Desert Island's nonflowering seed plants. For more information about a particular species, click on the link under the heading "common name". You will be taken to the family page (and more options) for that species.
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 | Source (full citation given after this table) |
| Cupressaceae | Juniperus | communis | L. | var. depressa | Pursh | common juniper | Greene et al. (2005) |
| Cupressaceae | Juniperus | horizontalis | Moench |   |   | creeping juniper | Greene et al. (2005) |
| Cupressaceae | Thuja | occidentalis | L. |   |   | northern white-cedar | Greene et al. (2005) |
| Pinaceae | Abies | balsamea | (L.) P. Mill. |   |   | balsam fir | Greene et al. (2005) |
| Pinaceae | Larix | laricina | (Du Roi) K. Koch |   |   | American larch, hackmatack, tamarack | Greene et al. (2005) |
| Pinaceae | Picea | glauca | (Moench) Voss |   |   | white spruce | Greene et al. (2005) |
| Pinaceae | Picea | mariana | (P. Mill.) B. S. P. |   |   | black spruce | Greene et al. (2005) |
| Pinaceae | Picea | rubens | Sarg. |   |   | red spruce | Greene et al. (2005) |
| Pinaceae | Pinus | banksiana | Lamb. |   |   | Jack pine | Greene et al. (2005) |
| Pinaceae | Pinus | resinosa | Ait. |   |   | red pine | Greene et al. (2005) |
| Pinaceae | Pinus | rigida | P. Mill. |   |   | pitch pine | Greene et al. (2005) |
| Pinaceae | Pinus | strobus | L. |   |   | eastern white pine | Greene et al. (2005) |
| Pinaceae | Pinus | sylvestris | L. |   |   | Scotch pine | Greene et al. (2005) |
| Pinaceae | Tsuga | canadensis | (L.) Carr. |   |   | eastern hemlock | Greene et al. (2005) |
| Taxaceae | Taxus | canadensis | Marsh. |   |   | American yew | Greene et al. (2005) |