What do these ranks mean? ORBIC's ranking definitions

Comb Notchwort

Sphenolobus minutus

List 2S1
Bearded Pawwort

Bearded Pawwort

Barbilophozia barbata

List 2S1

Greater Pawwort

Barbilophozia lycopodioides

List 2S1
Bog Pouchwort

Bog Pouchwort

Calypogeia sphagnicola

List 4S2
Liverwort

Liverwort

Rivulariella gemmipara

List 1S2

Liverwort

Cryptomitrium tenerum

List 2S1

Braided Frostwort

Gymnomitrion concinnatum

List 2S1
Great Mountain Flapwort

Great Mountain Flapwort

Harpanthus flotovianus

List 2S1

Arctic Flapwort

Jungermannia polaris

List 2S1

Gillman's Notchwort

Mesoptychia gillmanii

List 2S1
Marsh Notchwort

Marsh Notchwort

Heterogemma laxa

List 2S2

Compact Rustwort

Marsupella condensata

List 2S1

Liverwort

Marsupella aquatica

List 2S1

Japanese Flapwort

Nardia japonica

List 2S2

Liverwort

Peltolepis quadrata

List 2S1
Narrow Mushroom-Headed Liverwort

Narrow Mushroom-Headed Liverwort

Marchantia quadrata

List 2S2

Tree Fringewort

Ptilidium pulcherrimum

List 2S1
Liverwort

Liverwort

Radula brunnea

List 2S1

Narrow-Leaved Earwort

Scapania gymnostomophila

List 2S1

Dark Earwort

Scapania obscura

List 2S1
Liverwort

Liverwort

Fuscocephaloziopsis monticola

List 2S1

Liverwort

Sphaerocarpos hians

List 1S1
Large Notchwort

Large Notchwort

Tritomaria quinquedentata

List 2S1
Moss

Moss

Aloina bifrons

List 2S1
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