| County | FullName | Family | Status | Source |
|---|---|---|---|---|
| Madawaska | Agrimonia gryposepala Wallr. | Rosaceae | S2 | UNB |
| Madawaska | Allium canadense L. | Liliaceae | S1 | UNB |
| Madawaska | Amerorchis rotundifolia (Banks ex Pursh) Hulten | Orchidaceae | S2 | UNB |
| Madawaska | Anemone multifida Poir. var. multifida | Ranunculaceae | S2S3 | UNB |
| Madawaska | Arabis glabra (L.) Bernh. | Brassicaceae | S2 | UNB |
| Madawaska | Aster anticostensis Fern. | Asteraceae | S2 | UNB |
| Madawaska | Aster borealis (T. & G.) Prov. | Asteraceae | S2 | UNB |
| Madawaska | Astragalus alpinus L. var. brunetianus Fern. | Fabaceae | S3 | UNB |
| Madawaska | Betula minor (Tuckerman) Fern. | Betulaceae | S1 | UNB |
| Madawaska | Calypso bulbosa (L.) Oakes | Orchidaceae | S2 | UNB |
| mada/vict | Carex atratiformis Britt. | Cyperaceae | S3 | UNB |
| Madawaska | Carex concinna R. Br. | Cyperaceae | S2 | UNB |
| Madawaska | Carex conoidea Schkuhr ex Willd. | Cyperaceae | S2 | UNB |
| Madawaska | Carex garberi Fern. | Cyperaceae | S2 | UNB |
| Madawaska | Carex gynocrates Wormsk. ex Drejer | Cyperaceae | S2 | UNB |
| Madawaska | Carex haydenii Dewey | Cyperaceae | S2 | UNB |
| Madawaska | Carex prairea Dewey | Cyperaceae | S2 | UNB |
| Madawaska | Carex tenera Dewey | Cyperaceae | S3 | UNB |
| Madawaska | Carex vaginata Tausch | Cyperaceae | S2S3 | UNB |
| Madawaska | Castilleja septentrionalis Lindl. | Scrophulariaceae | S2 | UNB |
| Madawaska | Caulophyllum thalictroides (L.) Michx. | Berberidaceae | S3 | UNB |
| Madawaska | Clematis occidentalis (Hornem.) DC. | Ranunculaceae | S3 | UNB |
| Madawaska | Corallorhiza maculata Raf. var. maculata | Orchidaceae | S2S3 | UNB |
| Madawaska | Cypripedium parviflorum Salisb. var. pubescens (Willd.) Knight | Orchidaceae | S3 | UNB |
| Madawaska | Cypripedium reginae Walt. | Orchidaceae | S2 | NBnat31(2) |
| Madawaska | Cystopteris tenuis (Michx.) Desv. | Dryopteridaceae | S3S4 | UNB |
| Madawaska | Diphasiastrum x sabinifolium (Willd.) Holub | Lycopodiaceae | S2S3 | UNB |
| Madawaska | Elodea nuttallii (Planch.) St. John | Hydrocharitaceae | S2 | UNB |
| Madawaska | Galium trifidum L. ssp. subbiflorum (Wieg.) Piper | Rubiaceae | S1 | UNB |
| Madawaska | Goodyera repens (L.) R. Br. var. ophioides Fern. | Orchidaceae | S3 | UNB |
| Madawaska | Goodyera tesselata Lodd. | Orchidaceae | S3S4 | UNB |
| Madawaska | Gratiola neglecta Torr. | Scrophulariaceae | S3 | UNB |
| Madawaska | Hypericum majus (Gray) Britt. | Clusiaceae | S3 | UNB |
| Madawaska | Juncus brachycephalus (Engelm.) Buch. | Juncaceae | S2S3 | UNB |
| Madawaska | Listera auriculata Wieg. | Orchidaceae | S2S3 | UNB |
| Madawaska | Listera convallarioides (Sw.) Nutt | Orchidaceae | S3S4 | UNB |
| Madawaska | Listera cordata (L.) R. Br. | Orchidaceae | S3S4 | UNB |
| Madawaska | Littorella uniflora (L.) Aschers. | Plantaginaceae | S2 | UNB |
| Madawaska | Lobelia kalmii L. | Campanulaceae | S3S4 | UNB |
| Madawaska | Megalodonta beckii (Torr. ex. Spreng.) Greene | Asteraceae | S3 | UNB |
| Madawaska | Muhlenbergia richardsonis (Trin.) Rydb. | Poaceae | S3 | UNB |
| Madawaska | Myriophyllum sibiricum Komarov | Haloragaceae | S2 | UNB |
| Madawaska | Osmorhiza depauperata Phil. | Apiaceae | S2 | UNB |
| Madawaska | Oxytropis campestris (L.) DC var. johannensis Fern. | Fabaceae | S2 | UNB |
| Madawaska | Polystichum braunii (Spenner) Fée | Dryopteridaceae | S3 | UNB |
| Madawaska | Potamogeton obtusifolius Mert. & Koch | Potamogetonaceae | S2S3 | UNB |
| Madawaska | Potamogeton praelongus Wulfen | Potamogetonaceae | S1 | UNB |
| Madawaska | Potamogeton richardsonii (Benn.) Rydb. | Potamogetonaceae | S2 | UNB |
| Madawaska | Potentilla arguta Pursh | Rosaceae | S3 | UNB |
| Madawaska | Prenanthes racemosa Michx. | Asteraceae | S3 | UNB |
| Madawaska | Ranunculus aquatilis L. var. diffusus Withering | Ranunculaceae | S1? | UNB |
| Madawaska | Ranunculus lapponicus L. | Ranunculaceae | S1 | UNB |
| Madawaska | Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L. Hitchc. | Polygonaceae | S2? | UNB |
| Madawaska | Schizachyrium scoparium (Michx.) Nash | Poaceae | S2 | UNB |
| Madawaska | Spirodela polyrrhiza (L.) Schleid. | Lemnaceae | S2 | UNB |
| Madawaska | Stachys hispida Pursh. | Lamiaceae | S1S2 | UNB |
| Madawaska | Stuckenia filiformis (Pers.) Borner ssp. alpina (Blytt ex Hagstra.) R. Haynes, D. Les & M. Kral | Potamogetonaceae | S2 | UNB |
| Madawaska | Stuckenia filiformis (Pers.) Borner ssp. occidentalis (Robbins) R. Haynes, D. Les & M. Kral | Potamogetonaceae | S1 | UNB |
| Madawaska | Stuckenia pectinata (L.) Borner | Potamogetonaceae | S2 | UNB |
| Madawaska | Tanacetum bipinnatum (L.) Schultz-Bip. ssp. huronense (Nutt.) Breitung | Asteraceae | S3 | UNB |
| Madawaska | Tofieldia glutinosa (Michx.) Pers. | Liliaceae | S3 | UNB |
| Madawaska | Trichophorum clintonii (Gray) S.G. Smith | Cyperaceae | S3 | UNB |
| Madawaska | Trimorpha acris (L.) Nesom var. asteroides (Andrz. ex Bess.) Nesom | Asteraceae | S1 | UNB |
| Madawaska | Trisetum melicoides (Michx.) Scribn. | Poaceae | S3 | UNB |
| Madawaska | Vaccinium caespitosum Michx. | Ericaceae | S3 | UNB |
| Madawaska | Valeriana uliginosa (T. & G.) Rydb. | Valerianaceae | S2 | UNB |
| Madawaska | Veronica serpyllifolia L. ssp. humifusa (Dickson) Syme | Scrophulariaceae | S2S3 | UNB |
| Madawaska | Viola nephrophylla Greene | Violaceae | S3 | UNB |
| Madawaska | Viola selkirkii Pursh | Violaceae | S3 | UNB |