Data: Linda Ley, with additions by Kendra O’Neill
Provincial status
Provincial ranking and definition follows the Ontario Natural Heritage Information Centre (NHIC) list, which is updated on an ongoing basis.
| S1 | Critically imperiled in Ontario; usually 5 or fewer occurrences |
| S2 | Imperiled in Ontario; usually between 6 and 20 occurrences |
| S3 | Vulnerable in Ontario; 80 or fewer occurrences |
| S3-S4 | Rare to uncommon in Ontario |
| S4 | Apparently secure in Ontario; uncommon but not rare; some cause for long-term concern due to declines or other factors |
DIVISION HEPATICAE — LIVERWORTS
BLASIACEA
Blasia pusilla S3-S4
CALYPOGEIACEAE
Calypogeia muelleriana
CEPHALOZIACEAE
Nowellia curvifolia
GEOCALYCACEAE
Chiloscyphus profundus
Geocalyx graveolens
JUBULACEAE
Frullania eboracensis
JUNGERMANNIACEAE
Jungermannia gracillima S3?
PELLIACEAE
Pellia neesiana S3?
PTILIDIACEAE
Ptilidium pulcherrimum
RADULACEAE
Radula complanata
SCAPANIACEAE
Scapania nemorea
DIVISION MUSCI — MOSSES
AMBLYSTEGIACEAE
Amblystegium riparium
Calliergon cordifolium
Calliergon giganteum
Campylium chrysophyllum
Campylium hispidulum
Campylium radicale S3
Sanionia uncinata
Warnstorfia fluitans
AULACOMNIACEAE
Aulacomnium palustre
BARTRAMIACEAE
Philonotis fontana
Philonotis marchica
BRACHYTHECIACEAE
Brachythecium rutabulum
Brachythecium salebrosum
Brachythecium velutinum
Bryhnia novae-angliae
BRYACEAE
Bryum pseudotriquetrum
Leptobryum pyriforme
Pohlia nutans
DICRANACEAE
Dicranella heteromalla
Dicranum flagellare
Dicranum montanum
Dicranum polysetum
Dicranum scoparium — Broom Moss
Dicranum viride
HYLOCOMIACEAE
Hylocomium splendens — Feather Moss
Pleurozium schreberi
Rhytidiadelphus triquetrus — Shaggy Moss
HYPNANCEAE
Callicladium haldanianum
Hypnum imponens
Hypnum lindbergii
Hypnum pallescens
Platygyrium repens
Pylaisiella polyantha
LESKEACEAE
Leskea polycarpa
LEUCOBRYACEAE
Leucobryum glaucum
MNIACEAE
Plagiomnium ciliare
Rhizomnium pseudopunctatum
ORTHOTRICHACEAE
Orthotrichum ohioense S3
Ulota crispa
PLAGIOTHECIACEAE
Plagiothecium cavifolium
Plagiothecium denticulatum
Plagiothecium laetum
POLYTRICHACEAE
Atrichum altecristatum
Polytrichum commune — Common Haircap Moss
Polytrichum juniperinum — Juniper Moss
Polytrichum ohioense
SEMATOPHYLLACEAE
Pylaisiadelpha tenuirostris
SPHAGNACEAE
Sphagnum fallax
Sphagnum fimbriatum
Sphagnum girgensohnii
Sphagnum magellanicum
Sphagnum quinquefarium S3
TETRAPHIDACEAE
Tetraphis pellucida
THUIDIACEAE
Thuidium delicatulum
Thuidium recognitum