User:Millifolium/List of endangered lichens in Canada

This page lists the species of lichens that Committee on the Status of Endangered Wildlife in Canada (COSEWIC) recognizes as being at risk in Canada. Each at risk species is assessed and placed in one of the following categories, as defined by COSEWIC:
 * Endangered: A species facing imminent extirpation or extinction.
 * Threatened: A species that is likely to become endangered if nothing is done to reverse the factors leading to its extirpation or extinction.
 * Special Concern: A species that may become threatened or endangered because of a combination of biological characteristics and identified threats.
 * Data Deficient: A category that applies when the available information is insufficient (a) to resolve a wildlife species' eligibility for assessment or (b) to permit an assessment of the wildlife species' risk of extinction.

Endangered

 * Erioderma mollissimum


 * Erioderma pedicellatum (Atlantic population)


 * Heterodermia sitchensis


 * Physconia subpallida

Threatened

 * Leptogium rivulare

Special concern

 * Erioderma pedicellatum (boreal population)


 * Hypogymnia heterophylla


 * Nephroma occultum


 * Pseudevernia cladonia


 * Pseudocyphellaria rainierensis


 * Sclerophora peronella (Nova Scotia population)

Data deficient

 * Chaenotheca servitii


 * Phaeocalicium minutissimum

Species currently being assessed

 * Collema coniophilum
 * Leptogium platynum
 * Leptogium polycarpum
 * Degelia plumbea
 * Sticta oroborealis

High priority candidates for assessment

 * Anzia colpodes
 * Pannaria lurida
 * Peltigera hydrothyria
 * Ramalina sinensis
 * Sticta limbata

Rare lichens
Rare lichens in Canada list:

Greatest risk

 * Erioderma pedicellatum
 * Heterodermia sitchensis
 * Sticta oroborealis: foliose form is in danger of extirpation, shrubby form is vulnerable

Less risk

 * Cladonia labradorica
 * Lichinodium canadense

Greatest risk

 * Leptogium polycarpum
 * Lobaria silvae-veteris
 * Usnea rigida

Less risk

 * Amygdalaria continua
 * Amygdalaria haidensis
 * Brigantiaea fuscolutea
 * Bryoria carlottae
 * Bryoria cervinula
 * Bryoria salazinica
 * Cetrelia alaskana
 * Cladonia schofieldii
 * Cladonia thomsonii
 * Heterodermia squamulosa
 * Hydrothyria venosa
 * Massalongia microphylliza
 * Nephroma occultum
 * Ophioparma rubricosa: Also listed as primarily in USA, and at greater risk
 * Physconia thomsonii
 * Pseudevernia cladonia
 * Pseudocyphellaria rainierensis
 * Psora tenuifolia
 * Teloschistes arcticus

Greatest risk

 * Alectoria fallacina: Possibly extirpated in Canada
 * Leptogium dactylinum: Possibly extirpated in Canada

Less risk

 * Alectoria imshaugii
 * Buellia dialyta
 * Hypogymnia heterophylla
 * Neofuscelia subhosseana
 * Pertusaria globularis
 * Physcia callosa
 * Xanthoparmelia planilobata

Greatest risk

 * Acroscyphus sphaerophoroides
 * Collema auriforme
 * Collema callopismum
 * Degelia plumbea
 * Dictyonema moorei
 * Pertusaria hakkodensis
 * Psora vallesiaca
 * Sclerophora peronella
 * Stereocaulon depreaultii
 * Sticta canariensis

Less risk

 * Bactrospora brodoi
 * Cliostomum leprosum
 * Dermatocarpon linkolae
 * Leptogium subtile
 * Polychidium contortum
 * Umbilicaria aprina
 * Umbilicaria leiocarpa

Greatest risk

 * Erioderma sorediatum
 * Heterodermia hypoleuca: Possibly extirpated in Canada
 * Hypogymnia pulverata
 * Leioderma sorediatum
 * Leptogium brebissonii
 * Sticta arctica
 * Sticta wrightii
 * Usnea esperantiana
 * Usnea rubicunda

Less risk

 * Cetraria kamczatica
 * Cladina ciliata
 * Cladonia luteoalba
 * Collema glebulentum
 * Collema limosum
 * Everniastrum catawbiense
 * Fuscopannaria laceratula
 * Fuscopannaria leucosticta: Not in list
 * Glypholecia scabra
 * Gypsoplaca macrophylla
 * Heterodermia leucomela: syn. Heterodermia leucomelaena
 * Lempholemma polyanthes
 * Leptogium arcticum
 * Leptogium laceroides
 * Lithographa tesserata
 * Lobaria retigera
 * Pannaria hookeri
 * Parmeliella arctophila
 * Physcia dimidiata
 * Pilophorus cereolus
 * Pilophorus nigricaulis: Not in list
 * Pilophorus robustus
 * Pilophorus vegae
 * Tuckermannopsis inermis
 * Umbilicaria caroliniana
 * Umbilicaria hirsuta
 * Usnea ceratina
 * Usnea sphacelata
 * Zahlbrucknerella calcarea

Greatest risk

 * Cladonia prolifica
 * Erioderma mollissimum
 * Leptogium byssinum: Possibly extirpated in Canada
 * Leptogium corticola
 * Leptogium rivulare: Possibly extirpated in Canada
 * Parmelinopsis minarum
 * Punctelia borreri

Less risk

 * Agrestia hispida
 * Anaptychia ulotrichoides
 * Cladina subtenuis
 * Coccocarpia palmicola
 * Dermatocarpon moulinsii
 * Heterodermia obscurata
 * Hypotrachyna imbricatula
 * Koerberia sonomensis
 * Leptogium azureum
 * Ochrolechia yasudae
 * Parmotrema mellissii
 * Stereocaulon tennesseense

Removed from rare list

 * Cladonia subcervicornis: Reports in North America were misidentifications, found in Greenland.
 * Phaeophyscia imbricata: synonymous with Phaeophyscia hispidula, which is not rare.