Lichen Taxa held in MSC
| Genus | Species | N | MI | WI | S | Aus | E | Af | As | Notes | ||
| Umbilicaria | africana | . | . | . | . | . | . | Af | . | |||
| Umbilicaria | americana | N | . | . | . | . | . | . | . | |||
| Umbilicaria | antarctica | . | . | . | S | . | . | . | . | |||
| Umbilicaria | angulata | N | . | . | . | . | . | . | . | |||
| Umbilicaria | arctica | N | . | . | . | . | . | . | . | |||
| Umbilicaria | caroliniana | N | . | . | . | . | . | . | As | |||
| Umbilicaria | cinereorufescens | N | . | . | . | . | E | . | . | |||
| Umbilicaria | crustulosa | N | . | . | . | . | E | . | . | |||
| Umbilicaria | cylindrica | N | . | . | S | . | E | . | . | |||
| Umbilicaria | decussata | N | . | . | S | . | E | . | . | |||
| Umbilicaria | deusta | N | MI | . | . | . | E | . | . | |||
| Umbilicaria | esculenta | . | . | . | . | . | . | . | As | |||
| Umbilicaria | grisea | . | . | . | . | . | E | . | . | |||
| Umbilicaria | havaasii | N | . | . | . | . | . | . | . | |||
| Umbilicaria | hirsuta | N | . | . | . | . | E | . | . | |||
| Umbilicaria | hyperborea | N | MI | . | . | . | E | . | . | |||
| Umbilicaria | kisovana | . | . | . | . | . | . | . | As | |||
| Umbilicaria | krascheninnikovii | N | . | . | . | . | . | . | . | |||
| Umbilicaria | lambii | N | . | . | . | . | . | . | . | |||
| Umbilicaria | leiocarpa | . | . | . | . | . | E | . | . | |||
| Umbilicaria | mammulata | N | MI | . | . | . | . | . | . | |||
| Umbilicaria | muehlenbergii | N | MI | . | . | . | . | . | . | |||
| Umbilicaria | phaea | N | . | . | . | . | . | . | . | |||
| Umbilicaria | polyphylla | N | MI | . | S | . | . | . | . | |||
| Umbilicaria | polyrhiza | N | . | . | . | . | E | . | . | |||
| Umbilicaria | proboscidea | N | . | . | . | . | E | . | . | |||
| Umbilicaria | rigida | N | . | . | . | . | . | . | . | |||
| Umbilicaria | spodochroa | . | . | . | . | . | E | . | . | |||
| Umbilicaria | subglabra | . | . | . | . | Aus | . | . | . | |||
| Umbilicaria | subglabra | var. | pallens | . | . | . | . | . | E | . | . | |
| Umbilicaria | torrefacta | N | MI | . | . | . | E | . | . | |||
| Umbilicaria | umbilicarioides | . | . | . | S | . | . | Af | . | |||
| Umbilicaria | vellea | N | MI | . | . | . | E | . | . | |||
| Umbilicaria | virginis | N | . | . | . | . | . | . | . | |||
| Usnea | amaliae | . | . | . | S | . | . | . | . | |||
| Usnea | angulata | N | . | WI | . | . | . | . | . | |||
| Usnea | arizonica | N | . | . | . | . | . | . | . | |||
| Usnea | articulata | N | . | . | S | Aus | E | . | As | not in NA | ||
| Usnea | australis | . | . | . | S | . | . | . | . | |||
| Usnea | barbata | N | . | . | . | . | . | . | . | |||
| Usnea | baileyi | N | . | WI | . | Aus | . | . | . | |||
| Usnea | bogatoensis | . | . | . | S | . | . | . | . | |||
| Usnea | bornmuelleri | . | . | . | . | . | . | Af | . | |||
| Usnea | brouardi | N | . | . | . | . | . | . | . | |||
| Usnea | californica | N | . | . | . | . | . | . | . | |||
| Usnea | cavernosa | N | MI | . | . | . | . | . | . | |||
| Usnea | ceratina | N | MI | . | . | . | . | . | . | |||
| Usnea | ciliifera | . | . | . | . | Aus | . | . | . | |||
| Usnea | cornuta | . | MI | WI | . | . | . | . | . | |||
| Usnea | dasaea | . | . | WI | . | . | . | . | . | |||
| Usnea | dasycera | . | . | . | S | . | . | . | . | |||
| Usnea | dasypogoides | . | . | . | S | . | . | . | . | |||
| Usnea | dichroa | . | . | . | . | . | . | Af | . | |||
| Usnea | diffracta | . | . | . | . | . | E | . | . | |||
| Usnea | dimorpha | N | . | WI | . | . | . | . | . | |||
| Usnea | diplotypus | . | MI | . | . | . | . | . | . | |||
| Usnea | distensa | . | . | . | . | . | . | Af | . | |||
| Usnea | evansii | N | . | . | . | . | . | . | . | |||
| Usnea | faginea | . | . | . | . | . | E | . | . | |||
| Usnea | filipendula | N | MI | WI | . | . | E | . | . | |||
| Usnea | flavescens | . | . | . | . | . | . | Af | . | |||
| Usnea | florida | N | . | . | S | . | E | . | . | |||
| Usnea | fugiana | . | . | . | S | . | . | . | . | |||
| Usnea | fulvoreagens | N | MI | . | . | . | . | . | . | |||
| Usnea | glabrescens | N | MI | . | . | . | . | . | . | |||
| Usnea | gonioides | . | . | . | . | . | . | Af | . | |||
| Usnea | gracilis | . | . | . | S | . | . | . | . | |||
| Usnea | harmandii | . | . | . | . | . | E | . | . | |||
| Usnea | hesperina | . | . | WI | . | . | E | . | . | |||
| Usnea | hirta | N | MI | . | . | Aus | E | . | . | |||
| Usnea | hispida | . | . | . | . | . | . | Af | . | |||
| Usnea | inermis | . | . | . | . | Aus | . | . | . | |||
| Usnea | intexta | . | . | . | S | . | . | . | . | |||
| Usnea | jamaicensis | . | . | WI | . | . | . | . | . | |||
| Usnea | jelskii | . | . | . | S | . | . | . | . | |||
| Usnea | lapponica | N | . | . | . | . | . | . | . | |||
| Usnea | ledienii | . | . | . | . | . | . | Af | . | |||
| Usnea | lethariformis | . | . | . | S | . | . | . | . | |||
| Usnea | longissima | N | MI | . | . | . | E | . | As | |||
| Usnea | maculata | . | . | . | . | Aus | . | Af | . | |||
| Usnea | madeirensis | . | . | WI | . | . | . | . | . | |||
| Usnea | malmei | . | . | WI | . | . | . | . | . | |||
| Usnea | merrillii | N | . | WI | . | . | . | . | . | |||
| Usnea | misaminensis | . | . | . | . | . | . | . | As | |||
| Usnea | moreliana | N | . | . | . | . | . | . | . | |||
| Usnea | nidulifera | . | . | . | S | . | . | . | . | |||
| Usnea | perplectata | N | . | WI | S | . | . | . | . | |||
| Usnea | plicata | N | . | . | . | . | . | . | . | |||
| Usnea | pseudomontis-fugii | . | . | . | . | . | . | . | As | |||
| Usnea | pulvinata | . | . | . | . | . | . | Af | . | |||
| Usnea | rocellinia | . | . | . | S | . | . | . | . | |||
| Usnea | rubescens | . | . | . | S | . | . | . | . | |||
| Usnea | rubicunda | N | MI | WI | . | . | E | . | . | |||
| Usnea | scabrata | N | . | . | . | . | . | . | . | |||
| Usnea | scabrida | . | . | . | . | Aus | . | . | . | |||
| Usnea | speciosa | . | . | . | . | . | . | Af | . | |||
| Usnea | strigosa | N | . | . | . | . | . | . | . | |||
| Usnea | strigosa | subsp. | rubiginea | . | . | . | S | . | Af | . | ||
| Usnea | subfloridana | N | MI | . | . | . | . | . | . | |||
| Usnea | subfusca | N | MI | . | . | . | . | . | . | |||
| Usnea | subpectinata | . | . | . | . | . | E | . | . | |||
| Usnea | subscabrosa | . | MI | WI | . | . | . | . | . | |||
| Usnea | substerilis | N | MI | . | . | . | . | . | . | |||
| Usnea | subsordiata??? | . | . | . | . | . | . | . | As | |||
| Usnea | sulcata | v. | neutra | . | . | . | S | . | . | . | . | |
| Usnea | torulosa | . | . | . | . | Aus | . | . | . | |||
| Usnea | transitoria | . | . | WI | . | . | . | . | . | |||
| Usnea | trichodeoides | . | . | . | . | . | . | Af | . | |||
| Usnea | undulata | . | . | . | . | Aus | . | Af | . | |||
| Usnea | wasmathii | . | MI | . | . | . | . | . | . | |||
| Usnea | xanthopoga | . | . | . | S | Aus | . | . | . |
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