Plant and Fungi Watchlist

The plant and fungi Watchlist contains native species of vascular plants, mosses (bryophytes), macroalgae, lichens, and fungi (as determined by experts in the specific taxa groups) that may be in need of greater conservation efforts in Minnesota. Unlike species that have been assigned official legal status (Endangered, Threatened, Special Concern), Watchlist species have no legal status. They have been placed on the Watchlist because there is a need to gather additional data on their distribution and abundance, in many cases to inform future Endangered, Threatened, and Special Concern listing decisions. The current understanding of these species may be based upon both historic and recent collections and/or field experience and observations. However, they all share the need for additional data to properly assess their status in Minnesota.

A species may be included on the Watchlist for one or more of the following reasons:

  • Historic – A native species that has not been documented within the state in the past 50 years, and is thought to be extirpated. Historic species are prime candidates for targeted field surveys.
  • Newly Discovered/Re-discovered – A native species that has recently been discovered within the state. This designation is also used for species that have been recently re-discovered in the state after being formerly designated as historic. Species in this category are prime candidates for consideration during the next revision of Minnesota’s List of Endangered, Threatened, and Special Concern Species.
  • Recently Delisted – A native species that was removed from the state’s List of Endangered, Threatened, and Special Concern Species during a recent list revision process. Species with this designation are still considered uncommon enough to warrant further data collection and status review in the future (Note: This category is not an automatic landing spot for all Recently Delisted species. Those that are considered adequately secure will typically not be moved to this category).
  • Insufficient Information – A species in this category needs additional data to determine its potential status for state Endangered, Threatened or Special Concern listing. This may be because technical taxa expertise is lacking or additional surveys are needed. Species needing monitoring may also be included in this list, as may taxa that have recently been subjected to taxonomic revision.
  • Geographically Limited – A native species that is thought to be just “secure enough” as to not warrant a Special Concern status or higher but is of heightened conservation interest because it has a very limited geographic range in the state. Species in this category are generally at a greater risk of being negatively impacted by climate change, invasive species, and other factors.
  • Declining – A native species whose range and/or abundance is in significant decline but is not yet quite rare enough to warrant a status of Special Concern or higher. Uncommon species of increasingly threatened habitats may fit in this category.

Collecting and maintaining current data on these species between the statutorily mandated three-year Endangered, Threatened, and Special Concern Species list revision reviews will leave us in a better position to participate in the listing process and related efforts. The Watchlist includes species with conservation S-Ranks (as defined by NatureServe) of 1-Critically Imperiled, 2-Imperiled, 3-Vulnerable, 4-Apparently Secure, H-Historic and NR-Not Ranked. The ranks will potentially change as additional documentation of these species occurs. Even though no official protection is given to Watchlist species, the fact that they are being documented and tracked in the same Natural Heritage Information System database as Endangered, Threatened and Special Concern species does raise awareness of their rarity.

An excel file of the watchlist (updated 01/06/2022) is available for download. This spreadsheet contains the species listed below, the reason they were included on the Watchlist, their current S-Rank, and suspected area(s) of the state where they may be found.

The list is current as of 02/01/2022.

Suggesting an Addition to the Watchlist

Please complete this online form if you have a suggestion of a native species of vascular plant, moss (bryophyte), macroalgae, lichen, or fungus that you think may warrant inclusion on this list. We ask that you include sufficient detail and rationale with your suggestion. Please note submissions received via this form will be considered, but are not guaranteed to be added to the list.

Reporting Watchlist Species Observations

Watchlist observations should be submitted using the same templates and process used for reporting an endangered, threatened or special concern species (including the collection of voucher specimens for documentation). Learn more by visiting the Natural Heritage Information System -Submitting Data section. You should email your observations to: [email protected]

Vascular Plants
Scientific nameCommon nameListing Reason
Agastache nepetoidesYellow Giant HyssopNewly Discovered/Re-Discovered
Anagallis minimaChaffweedInsufficient Information
Anemone multifidaCut-leaved AnemoneInsufficient Information
Astragalus racemosusRacemose Milk-vetchHistoric
Astragalus tenellusLoose-flowered Milk-vetchHistoric
Aureolaria grandiflora var. pulchraLarge-flowered False FoxgloveHistoric
Boechera collinsiiCollins' Rock-cressGeographically Limited
Botrychium crenulatumDainty MoonwortNewly Discovered/Re-Discovered
Botrychium michiganenseMichigan MoonwortInsufficient Information
Callirhoe triangulataClustered Poppy-mallowNewly Discovered/Re-Discovered
Calopogon oklahomensisOklahoma Grass PinkHistoric
Canadanthus modestusModest AsterInsufficient Information
Carex capillarisHair-like SedgeInsufficient Information
Carex crus-corviRaven Foot SedgeHistoric
Carex debilis var. rudgeiWeak SedgeInsufficient Information
Carex katahdinensisKatahdin SedgeInsufficient Information
Carex lucorum var. lucorumBlue Ridge SedgeHistoric
Carex luridaShallow SedgeInsufficient Information
Carex trichocarpaHairy-fruited SedgeGeographically Limited
Ceratophyllum echinatumSpiny HornwortInsufficient Information
Chamaerhodos erectaNuttall GroundroseRecently Delisted
Corispermum villosumEastern BugseedInsufficient Information
Cornus drummondiiRough-leaved DogwoodNewly Discovered/Re-Discovered
Crataegus coccinea var. pringleiScarlet HawthornHistoric
Crataegus laurentianaLaurentian HawthornInsufficient Information
Crataegus scabridaRough HawthornHistoric
Crataegus sheridanaGreat Plains HawthornInsufficient Information
Cuscuta megalocarpaLarge-fruit DodderInsufficient Information
Cuscuta obtusiflora var. glandulosaPeruvian DodderInsufficient Information
Cuscuta polygonorumSmartweed DodderInsufficient Information
Cyperus houghtoniiHoughton CyperusDeclining
Cystopteris laurentianaLaurentian Bladder FernInsufficient Information
Cystopteris tennesseensisTennessee Bladder FernInsufficient Information
Dendrolycopodium obscurumFlat-branched Tree Club-mossNewly Discovered/Re-Discovered
Descurainia incanaRichardson Tansy MustardHistoric
Desmodium illinoenseIllinois Tick-trefoilGeographically Limited
Didiplis diandraWater PurslaneHistoric
Dodecatheon amethystinumJewelled Shooting StarGeographically Limited
Dryopteris filix-masMale FernNewly Discovered/Re-Discovered
Eleocharis engelmanniiEngelmann SpikerushInsufficient Information
Eleocharis mamillataMamillate Spike-rushInsufficient Information
Erigeron pulchellus var. tolsteadiiRibin PlaintainHistoric
Euphorbia hexagonaSix-angle SpurgeHistoric
Eutrochium maculatum var. foliosum Historic
Galium circaezans var. hypomalacumLicorice BedstrawNewly Discovered/Re-Discovered
Galium palustreMarsh BedstrawNewly Discovered/Re-Discovered
Gaura biennisBiennial GauraInsufficient Information
Geum laciniatumRough avensInsufficient Information
Gleditsia triacanthosHoneylocustInsufficient Information
Hedeoma pulegioidesPennyroyalHistoric
Hesperostipa curtisetaSmall Porcupine GrassNewly Discovered/Re-Discovered
Hieracium longipilumLong-bearded HawkweedGeographically Limited
Hypericum kalmianumKalm St. John-wortInsufficient Information
Juncus anthelatusGreater Poverty RushInsufficient Information
Lactuca floridanaFlorida LettuceInsufficient Information
Lemna obscuraLittle DuckweedInsufficient Information
Lemna perpusillaMinute DuckweedInsufficient Information
Leucophysalis grandifloraDwarf Ground CherryInsufficient Information
Leucospora multifidaNarrowleaf PaleseedInsufficient Information
Lupinus perennisWild LupineDeclining
Lycopus virginicusVirginia Water HorehoundInsufficient Information
Lysimachia lanceolataLance-leaved LoosestrifeNewly Discovered/Re-Discovered
Monolepis nuttallianaPovertyweedHistoric
Morus rubraRed MulberryNewly Discovered/Re-Discovered
Muhlenbergia schreberiDrop SeedInsufficient Information
Myriophyllum pinnatumCutleaf Water-milfoilInsufficient Information
Oenothera laciniataSlashed Evening PrimroseInsufficient Information
Ophioglossum pusillumAdder TongueInsufficient Information
Oxypolis rigidiorCowbaneDeclining
Penstemon digitalisBeard-tongueInsufficient Information
Penstemon pallidusPale Beard-tongueInsufficient Information
Plantago virginicaHoary PlantainInsufficient Information
Poa aridaPlains BluegrassGeographically Limited
Poa sylvestrisWoodland BluegrassInsufficient Information
Polygonum hydropiperoidesMild Water PepperInsufficient Information
Potamogeton x hagstroemiiHagström PondweedInsufficient Information
Potamogeton x haynesiiHaynes' PondweedInsufficient Information
Potentilla hippianaWoolly CinquefoilInsufficient Information
Potentilla lasiodontaSandhills CinquefoilInsufficient Information
Potentilla paradoxaNicollet CinquefoilInsufficient Information
Prenanthes crepidineaNodding Rattlesnake-rootHistoric
Puccinellia nuttallianaAlkali GrassInsufficient Information
Quercus muehlenbergiiDwarf Chestnut OakHistoric
Rhynchospora capitellataBrownish Beak SedgeNewly Discovered/Re-Discovered
Rorippa sinuataSpreading Yellow CressInsufficient Information
Rubus wheeleriWheeler BlackberryInsufficient Information
Rudbeckia subtomentosaSweet ConeflowerGeographically Limited
Schoenoplectus purshianus var. purshianusWeak-stalk BulrushInsufficient Information
Scirpus georgianusGeorgia BulrushInsufficient Information
Scirpus pendulusPendulous BulrushInsufficient Information
Sparganium glomeratumClustered Bur-reedRecently Delisted
Symphyotrichum laeve var. geyeriSmooth AsterHistoric
Symphyotrichum pilosum var. pilosumAwl AsterInsufficient Information
Symphyotrichum pilosum var. pringleiAwl AsterInsufficient Information
Thalictrum revolutumWaxleaf MeadowrueInsufficient Information
Triodanis leptocarpaVenus' Looking-glassHistoric
Verbena x deamii Historic
Verbena x perriana Historic
Vernonia baldwinii Insufficient Information
Viola palustrisNorthern Marsh VioletInsufifcient Information
Viola x primulifoliaPrimrose VioletInsufficient Information
Wolffia brasiliensisPointed WatermealNewly Discovered/Re-Discovered
Woodsia obtusa ssp. obtusaBluntlobe CliffInsufficient Information
Zizania aquatica var. aquaticaSouthern Wild RiceGeographically Limited
Bryophytes
Scientific nameCommon namePrimary reason for listing
Diphyscium foliosumA Species of MossInsuffcient Information
Fontinalis welchianaWelch's Fontinalis MossNewly Discovered/Re-Discovered
Philonotis yezoanaPhilonotis MossNewly Discovered/Re-Discovered
Riccia sorocarpaCommon CrystalwortNewly Discovered/Re-Discovered
Splachnum ampullaceumA Species of MossInsuffcient Information
Tayloria serrataSerrate-leaved Dung MossNewly Discovered/Re-Discovered
Tetraplodon angustatusA Species of Dung MossNewly Discovered/Re-Discovered
Tetraplodon mnioidesSlender Cruet-mossNewly Discovered/Re-Discovered
Tomentypnum falcifoliumCurved-leaved Golden MossNewly Discovered/Re-Discovered
Macroalgae
Scientific nameCommon namePrimary reason for listing
Lychnothamnus barbatusA Species of MacroalgaeNewly Discovered/Re-Discovered
Lichens
Scientific nameCommon namePrimary reason for listing
Bryoria implexaBoreal Horsehair Lichen 
Bryoria nadvornikianaSpiny Gray Horsehair Lichen 
Calicium pinastriA species of Lichen 
Cetraria arenariaA species of Lichen 
Cetraria ericetorumA species of Lichen 
Chaenotheca brachypodaA species of Lichen 
Chaenotheca nitidulaA species of Lichen 
Chaenothecopsis asperopodaA species of Lichen 
Chaenothecopsis brevipesA species of Lichen 
Chaenothecopsis exilisA species of Lichen 
Chaenothecopsis ochroleucaA species of Lichen 
Chaenothecopsis viridialbaA species of Lichen 
Cyphelium notarisiiA species of Lichen 
Enchylium expansumA species of Lichen 
Lepraria disjunctaA Species of Dust Lichen 
Leproloma membranaceumA species of Lichen 
Lobaria quercizansSmooth Lungwort 
Microcalicium ahlneriA species of Lichen 
Microcalicium conversumA species of Lichen 
Parmotrema hypotropumParmotrema Lichen 
Parmotrema perlatumBlack Stone Flower 
Physconia subpallidaPale-bellied Frost Lichen 
Ramalina farinaceaDotted Ramalina 
Ramalina obtusataA species of Lichen 
Rhizocarpon lecanorinumA species of Lichen 
Rinodina wetmoreiA species of Lichen 
Solorina saccataChocolate Chip Lichen 
Sphinctrina leucopodaA species of Lichen 
Umbilicaria hirsutaHairy Navel Lichen 
Usnea angulataBeard Lichen 
Usnea dasaeaA species of Lichen 
Usnea entoviolataA species of Lichen 
Usnea perhispidellaA species of Lichen 
Fungi
Scientific nameCommon namePrimary reason for listing
Ascocoryne turficolaA species of FungiNewly Discovered/Re-Discovered