Adapted from 'An Enthusiasts Guide to the Liverworts and Hornworts of Ontario'
Plant size may vary considerably in response to environmental conditions.
ranked from smallest (ca. 1mm wide) to largest (ca. 12 mm wide)
Riccia bifurca
Riccia frostii
Riccia hueberiana ssp. sullivantii
Riccia sorocarpa
Riccia cavernosa
Riccia beyrichiana
Riccia fluitans
Ricciocarpos natans
Mannia sibirica
Mannia triandra
Asterelia tenella
Mannia fragrans
Clevea hyalina
Reboulia hemispherica
Lunularia cruciata
Marchantia quadrata
Marchantia polymorpha var polymorpha
Marchantia polymorpha var ruderalis
Marchantia polymorpha var montivagans
Conocephalum salebrosum
ranked from smallest (0.15 mm wide, 10 mm long) to largest (ca. 10 mm wide, 50 mm long)
Riccardia palmata
Riccardia latifrons
Riccardia multifida
Metzgeria furcata
Fossombronia wondraczekii
Fossombronia foveolata
Aneura pinguis
Pallavicinia lyellii
Moerckia flotoviana
Blasia pusilla
Metzgeria conjugata
Pellia neesiana
Apopellia megaspora
Pellia epiphylla
VERY SMALL; usually less than 1 mm wide; mostly less than 10 mm long; hard to see except under a microscope.
Crossocalyx hellerianus
Fuscocephaloziopsis catenulata
Cephalozia macounii
Cephaloziella divaricata
Cephaloziella elachista
Cephaloziella hampeana
Cephaloziella rubella
Cephaloziella rubella var sullivantii
Cephaloziella spinigera
Cololejeunea biddlecomiae
Frullania oakesiana
Frullania selwyniana
Harpanthus drummondii
Kurzia pauciflora
Kurzia sylvatica
Lejeunea cavifolia
Mesoptychia badensis
Scapania apiculata
Scapania glaucocephala
SMALL; from less than 1 to ca. 2 mm wide; up to 20 mm long; hand lens necessary to see clearly
Sphenolobus minutus var weberi
Blepharostoma trichophyllum
Calypogeia sphagnicola
Calypogeia suecica
Cephalozia bicuspidata
Fuscocephaloziopsis connivens
Fuscocephaloziopsis lunulifolta
Fuscocephaloziopsis pleniceps
Odontoschisma fluitans
Frullania bolanderi
Frullania brittoniae
Frullania eboracensis
Frullania inflata
Geocalyx graveolens
Gymnocolea inflata
Harpanthus scutatus
Solenostoma gracillimum
Jungermannia pumila
Lepidozia reptans
Lophocolea minor
Lophozia ascendens
Isopaches bicrenatus
Mesoptychia collaris
Mesoptychia heterocolpos
Schistochilopsis incisa
Lophoziopsis longidens
Lophozia ventricosa
Barbilophozia sudetica
Marsupella sparsifolia
Nardia insecta
Nowellia curvifolia
Odontoschisma denudatum
Odontoschisma macounii
Ptilidium pulcherrimum
Radula complanata
Scapania curta
Scapania cuspiduligera
Scapania gymnostophila
Scapania lingulata
Scapania mucronata
Scapania scandica
Scapania umbrosa
Tritomaria exsecta
Tritomaria exsectiformis
Tritomaria scitula
MEDIUM; (1)2-3 mm wide; 1.5 to 30+ mm long; can be distinguished with the naked eye.
Neoorthocaulis attenuatus
Neoorthocaulis binsteadii
Schljakovia kunzeana
Bazzania denudata
Calypogeia neogaea
Calypogeia integristipula
Calypogeia muelleriana
Calypogeia neesiana
Chiloscyphus pallescens
Chiloscyphus polyanthos
Diplophyllum taxifolium
Frullania asagrayana
Syzygiella autumnalis
Solenostoma crenuliforme
Solenostoma hyalinum
Liochlaena lanceolata
Lophocolea bidentata
Lophocolea heterophylla
Tritomaria capitata
Lophoziopsis excisa
Mesoptychia gillmanii
Schistochilopsis grandiretis
Mesoptychia heterocolpos
Tritomaria laxa
Lophozia wenzelii
Lophozia ventricosa
Marsupella sphacelata
Mylia anomala
Odontoschisma denudatum
Odontoschisma elongatum
Ptilidium ciliare
Scapania hyperborea
Scapania irrigua
Scapania subalpina
Tetralophozia setiformis
LARGE; over 3 mm wide; usually over 30 mm long; easy to see.
Anastrophyllum michauxii
Sphenolobus saxicola
Barbilophozia barbata
Barbilophozia hatcheri
Barbilophozia lycopodioides
Bazzania tricrenata
Bazzania trilobata
Chiloscyphus pallescens var. fragilis
Chiloscyphus polyanthos var. rivularis
Jungermannia exsertifolia ssp. cordifolia
Mesoptychia bantriensis
Schistochilopsis grandiretis
Mesoptychia rutheana
Marsupella emarginata
Mylia taylorii
Plagiochila porelloides
Porella pinnata
Porella platyphylla
Scapania degenii
Scapania nemorea
Scapania paludicola
Scapania spitzbergensis
Scapania undulata
Trichocolea tomentella
Tritomaria quinquedentata
Errors, improvements or suggestions? Email info@DigitalNaturalist.INFO.
last update 2025-Jun-6